mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-27 13:53:31 +01:00
made 'app' connection be 'exit' connection
general cleanup, particularly in buffers.c svn:r17
This commit is contained in:
Roger Dingledine
parent
e6f67fb15d
commit
b503d4c6d6
@ -4,7 +4,7 @@ bin_PROGRAMS = or
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or_LDADD = -L../common -lor
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or_SOURCES = args.c buffers.c cell.c circuit.c command.c connection.c \
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connection_app.c connection_op.c connection_or.c config.c \
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connection_exit.c connection_op.c connection_or.c config.c \
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main.c onion.c routers.c
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noinst_HEADERS = or.h
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122
src/or/buffers.c
122
src/or/buffers.c
@ -3,52 +3,35 @@
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#include "or.h"
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int buf_new(char **pbuf, size_t *pbuflen, size_t *pbuf_datalen) {
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int buf_new(char **buf, size_t *buflen, size_t *buf_datalen) {
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if (!pbuf || !pbuflen || !pbuf_datalen) /* invalid parameters */
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return -1;
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assert(buf && buflen && buf_datalen);
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*pbuf = (char *)malloc(MAX_BUF_SIZE);
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if(!*pbuf)
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*buf = (char *)malloc(MAX_BUF_SIZE);
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if(!*buf)
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return -1;
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memset(*pbuf,0,MAX_BUF_SIZE);
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*pbuflen = MAX_BUF_SIZE;
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*pbuf_datalen = 0;
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memset(*buf,0,MAX_BUF_SIZE);
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*buflen = MAX_BUF_SIZE;
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*buf_datalen = 0;
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return 0;
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}
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int buf_free(char *buf) {
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void buf_free(char *buf) {
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free(buf);
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return 0;
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}
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int read_to_buf(int s, char **pbuf, size_t *pbuflen, size_t *pbuf_datalen, int *preached_eof) {
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int read_to_buf(int s, char **buf, size_t *buflen, size_t *buf_datalen, int *reached_eof) {
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/* grab from s, put onto buf, return how many bytes read */
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int read_result;
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char *buf;
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size_t buflen;
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size_t buf_datalen;
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if (!pbuf || !pbuflen || !pbuf_datalen || !preached_eof) /* invalid parameters */
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return -1 ;
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if(s<0) {
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log(LOG_DEBUG,"read_to_buf() received negative socket %d.",s);
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return -1;
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}
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assert(buf && *buf && buflen && buf_datalen && reached_eof && (s>=0));
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/* this is the point where you would grow the buffer, if you want to */
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buf = *pbuf, buflen = *pbuflen, buf_datalen = *pbuf_datalen;
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if (!buf) /* invalid parameter */
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return -1;
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read_result = read(s, buf+buf_datalen, buflen - buf_datalen);
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read_result = read(s, *buf+*buf_datalen, *buflen - *buf_datalen);
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if (read_result < 0) {
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if(errno!=EAGAIN) { /* it's a real error */
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return -1;
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@ -56,46 +39,32 @@ int read_to_buf(int s, char **pbuf, size_t *pbuflen, size_t *pbuf_datalen, int *
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return 0;
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} else if (read_result == 0) {
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log(LOG_DEBUG,"read_to_buf(): Encountered eof");
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*preached_eof = 1;
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*reached_eof = 1;
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return 0;
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} else { /* we read some bytes */
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*pbuf_datalen = buf_datalen + read_result;
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log(LOG_DEBUG,"read_to_buf(): Read %d bytes. %d on inbuf.",read_result, *pbuf_datalen);
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*buf_datalen += read_result;
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log(LOG_DEBUG,"read_to_buf(): Read %d bytes. %d on inbuf.",read_result, *buf_datalen);
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return read_result;
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}
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}
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int flush_buf(int s, char **pbuf, size_t *pbuflen, size_t *pbuf_datalen) {
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int flush_buf(int s, char **buf, size_t *buflen, size_t *buf_datalen) {
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/* push from buf onto s
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* then memmove to front of buf
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* return -1 or how many bytes remain on the buf */
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int write_result;
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char *buf;
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size_t buflen;
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size_t buf_datalen;
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if (!pbuf || !pbuflen || !pbuf_datalen) /* invalid parameters */
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return -1;
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assert(buf && *buf && buflen && buf_datalen && (s>=0));
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if(s<0) {
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log(LOG_DEBUG,"flush_buf() received negative socket %d.",s);
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return -1;
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}
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if(*pbuf_datalen == 0) /* nothing to flush */
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if(*buf_datalen == 0) /* nothing to flush */
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return 0;
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/* this is the point where you would grow the buffer, if you want to */
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buf = *pbuf, buflen = *pbuflen, buf_datalen = *pbuf_datalen;
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if (!buf) /* invalid parameter */
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return -1;
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write_result = write(s, buf, buf_datalen);
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write_result = write(s, buf, *buf_datalen);
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if (write_result < 0) {
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if(errno!=EAGAIN) { /* it's a real error */
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return -1;
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@ -103,72 +72,53 @@ int flush_buf(int s, char **pbuf, size_t *pbuflen, size_t *pbuf_datalen) {
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log(LOG_DEBUG,"flush_buf(): write() would block, returning.");
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return 0;
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} else {
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*pbuf_datalen -= write_result;
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memmove(buf, buf+write_result, *pbuf_datalen);
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log(LOG_DEBUG,"flush_buf(): flushed %d bytes, %d remain.",write_result,*pbuf_datalen);
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return *pbuf_datalen;
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*buf_datalen -= write_result;
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memmove(*buf, *buf+write_result, *buf_datalen);
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log(LOG_DEBUG,"flush_buf(): flushed %d bytes, %d remain.",write_result,*buf_datalen);
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return *buf_datalen;
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}
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}
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int write_to_buf(char *string, size_t string_len,
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char **pbuf, size_t *pbuflen, size_t *pbuf_datalen) {
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char **buf, size_t *buflen, size_t *buf_datalen) {
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/* append string to buf (growing as needed, return -1 if "too big")
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* return total number of bytes on the buf
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*/
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char *buf;
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size_t buflen;
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size_t buf_datalen;
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if (!string || !pbuf || !pbuflen || !pbuf_datalen) /* invalid parameters */
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return -1;
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assert(string && buf && *buf && buflen && buf_datalen);
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/* this is the point where you would grow the buffer, if you want to */
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buf = *pbuf, buflen = *pbuflen, buf_datalen = *pbuf_datalen;
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if (!buf) /* invalid parameter */
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return -1;
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if (string_len + buf_datalen > buflen) { /* we're out of luck */
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if (string_len + *buf_datalen > *buflen) { /* we're out of luck */
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log(LOG_DEBUG, "write_to_buf(): buflen too small. Time to implement growing dynamic bufs.");
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return -1;
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}
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memcpy(buf+buf_datalen, string, string_len);
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*pbuf_datalen += string_len;
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log(LOG_DEBUG,"write_to_buf(): added %d bytes to buf (now %d total).",string_len, *pbuf_datalen);
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return *pbuf_datalen;
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memcpy(*buf+*buf_datalen, string, string_len);
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*buf_datalen += string_len;
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log(LOG_DEBUG,"write_to_buf(): added %d bytes to buf (now %d total).",string_len, *buf_datalen);
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return *buf_datalen;
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}
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int fetch_from_buf(char *string, size_t string_len,
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char **pbuf, size_t *pbuflen, size_t *pbuf_datalen) {
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char **buf, size_t *buflen, size_t *buf_datalen) {
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/* if there is string_len bytes in buf, write them onto string,
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* then memmove buf back (that is, remove them from buf) */
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char *buf;
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size_t buflen;
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size_t buf_datalen;
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if (!string || !pbuf || !pbuflen || !pbuf_datalen) /* invalid parameters */
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return -1;
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assert(string && buf && *buf && buflen && buf_datalen);
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/* this is the point where you would grow the buffer, if you want to */
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buf = *pbuf, buflen = *pbuflen, buf_datalen = *pbuf_datalen;
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if (!buf) /* invalid parameter */
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if(string_len > *buf_datalen) /* we want too much. sorry. */
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return -1;
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if(string_len > buf_datalen) /* we want too much. sorry. */
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return -1;
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memcpy(string,buf,string_len);
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*pbuf_datalen -= string_len;
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memmove(buf, buf+string_len, *pbuf_datalen);
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return *pbuf_datalen;
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memcpy(string,*buf,string_len);
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*buf_datalen -= string_len;
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memmove(*buf, *buf+string_len, *buf_datalen);
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return *buf_datalen;
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}
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@ -242,9 +242,9 @@ int circuit_deliver_data_cell(cell_t *cell, circuit_t *circ, connection_t *conn,
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return -1;
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}
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if(conn->type == CONN_TYPE_APP) { /* send payload directly */
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log(LOG_DEBUG,"circuit_deliver_data_cell(): Sending to application.");
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if(connection_app_process_data_cell(cell, conn) < 0) {
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if(conn->type == CONN_TYPE_EXIT) { /* send payload directly */
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log(LOG_DEBUG,"circuit_deliver_data_cell(): Sending to exit.");
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if(connection_exit_process_data_cell(cell, conn) < 0) {
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return -1;
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}
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} else { /* send it as a cell */
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@ -96,6 +96,9 @@ void command_process_create_cell(cell_t *cell, connection_t *conn) {
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/* i've disabled making connections through OPs, but it's definitely
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* possible here. I'm not sure if it would be a bug or a feature. -RD
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*/
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/* note also that this will close circuits where the onion has the same
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* router twice in a row in the path. i think that's ok. -RD
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*/
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log(LOG_DEBUG,"command_process_create_cell(): Next router not connected. Closing.");
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circuit_close(circ);
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}
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@ -132,15 +135,15 @@ void command_process_create_cell(cell_t *cell, connection_t *conn) {
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free((void *)cellbuf);
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return;
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} else { /* this is destined for an app */
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log(LOG_DEBUG,"command_process_create_cell(): Creating new application connection.");
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n_conn = connection_new(CONN_TYPE_APP);
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} else { /* this is destined for an exit */
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log(LOG_DEBUG,"command_process_create_cell(): Creating new exit connection.");
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n_conn = connection_new(CONN_TYPE_EXIT);
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if(!n_conn) {
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log(LOG_DEBUG,"command_process_create_cell(): connection_new failed. Closing.");
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circuit_close(circ);
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return;
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}
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n_conn->state = APP_CONN_STATE_CONNECTING_WAIT;
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n_conn->state = EXIT_CONN_STATE_CONNECTING_WAIT;
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n_conn->s = -1; /* not yet valid */
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if(connection_add(n_conn) < 0) { /* no space, forget it */
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log(LOG_DEBUG,"command_process_create_cell(): connection_add failed. Closing.");
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@ -151,7 +154,6 @@ void command_process_create_cell(cell_t *cell, connection_t *conn) {
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circ->n_conn = n_conn;
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return;
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}
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}
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void command_process_data_cell(cell_t *cell, connection_t *conn) {
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@ -207,6 +209,5 @@ void command_process_destroy_cell(cell_t *cell, connection_t *conn) {
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if(cell->aci == circ->n_aci) /* the destroy came from ahead */
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connection_send_destroy(circ->p_aci, circ->p_conn);
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circuit_free(circ);
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}
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@ -3,6 +3,8 @@
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/********* START VARIABLES **********/
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#if 0
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/* these are now out of date :( -RD */
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char *conn_type_to_string[] = {
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"OP listener", /* 0 */
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"OP", /* 1 */
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@ -26,12 +28,13 @@ char *conn_state_to_string[][10] = {
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"sending auth (as server)", /* 5 */
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"waiting for nonce (as server)",/* 6 */
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"open" }, /* 7 */
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{ "connecting", /* app, 0 */
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{ "connecting", /* exit, 0 */
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"open", /* 1 */
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"waiting for dest info", /* 2 */
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"flushing buffer, then will close",/* 3 */
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"close_wait" } /* 4 */
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};
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#endif
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/********* END VARIABLES ************/
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@ -44,8 +47,9 @@ connection_t *connection_new(int type) {
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memset(conn,0,sizeof(connection_t)); /* zero it out to start */
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conn->type = type;
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buf_new(&conn->inbuf, &conn->inbuflen, &conn->inbuf_datalen);
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buf_new(&conn->outbuf, &conn->outbuflen, &conn->outbuf_datalen);
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if(buf_new(&conn->inbuf, &conn->inbuflen, &conn->inbuf_datalen) < 0 ||
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buf_new(&conn->outbuf, &conn->outbuflen, &conn->outbuf_datalen) < 0)
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return NULL;
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return conn;
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}
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@ -61,8 +65,8 @@ void connection_free(connection_t *conn) {
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/* FIXME should we do these for all connections, or just ORs, or what */
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if(conn->type == CONN_TYPE_OR ||
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conn->type == CONN_TYPE_OP) {
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// EVP_CIPHER_CTX_cleanup(&conn->f_ctx);
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// EVP_CIPHER_CTX_cleanup(&conn->b_ctx);
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EVP_CIPHER_CTX_cleanup(&conn->f_ctx);
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EVP_CIPHER_CTX_cleanup(&conn->b_ctx);
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}
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if(conn->s > 0)
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@ -99,6 +103,8 @@ int connection_create_listener(RSA *prkey, struct sockaddr_in *local, int type)
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fcntl(s, F_SETFL, O_NONBLOCK); /* set s to non-blocking */
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conn = connection_new(type);
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if(!conn)
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return -1;
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conn->s = s;
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if(connection_add(conn) < 0) { /* no space, forget it */
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@ -156,7 +162,7 @@ int connection_handle_listener_read(connection_t *conn, int new_type, int new_st
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}
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int retry_all_connections(routerinfo_t **router_array, int rarray_len,
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RSA *prkey, uint16_t or_port, uint16_t op_port) {
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RSA *prkey, uint16_t or_port, uint16_t op_port, uint16_t ap_port) {
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/* start all connections that should be up but aren't */
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@ -201,7 +207,6 @@ int retry_all_connections(routerinfo_t **router_array, int rarray_len,
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}
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return 0;
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}
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int connection_read_to_buf(connection_t *conn) {
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@ -226,11 +231,10 @@ int connection_write_to_buf(char *string, int len, connection_t *conn) {
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int connection_send_destroy(aci_t aci, connection_t *conn) {
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cell_t cell;
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if(!conn)
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return -1;
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assert(conn);
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if(conn->type == CONN_TYPE_OP ||
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conn->type == CONN_TYPE_APP) {
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conn->type == CONN_TYPE_EXIT) {
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log(LOG_DEBUG,"connection_send_destroy(): At an edge. Marking connection for close.");
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conn->marked_for_close = 1;
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return 0;
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@ -290,8 +294,8 @@ int connection_process_inbuf(connection_t *conn) {
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return connection_op_process_inbuf(conn);
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case CONN_TYPE_OR:
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return connection_or_process_inbuf(conn);
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case CONN_TYPE_APP:
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return connection_app_process_inbuf(conn);
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case CONN_TYPE_EXIT:
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return connection_exit_process_inbuf(conn);
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default:
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log(LOG_DEBUG,"connection_process_inbuf() got unexpected conn->type.");
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return -1;
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@ -309,8 +313,8 @@ int connection_finished_flushing(connection_t *conn) {
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return connection_op_finished_flushing(conn);
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case CONN_TYPE_OR:
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return connection_or_finished_flushing(conn);
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case CONN_TYPE_APP:
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return connection_app_finished_flushing(conn);
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case CONN_TYPE_EXIT:
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return connection_exit_finished_flushing(conn);
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default:
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log(LOG_DEBUG,"connection_finished_flushing() got unexpected conn->type.");
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return -1;
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@ -1,39 +1,35 @@
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#include "or.h"
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connection_t *connection_app_new(void) {
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return connection_new(CONN_TYPE_APP);
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}
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int connection_exit_process_inbuf(connection_t *conn) {
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int connection_app_process_inbuf(connection_t *conn) {
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assert(conn && conn->type == CONN_TYPE_APP);
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assert(conn && conn->type == CONN_TYPE_EXIT);
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if(conn->inbuf_reached_eof) {
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/* eof reached, kill it. */
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log(LOG_DEBUG,"connection_app_process_inbuf(): conn reached eof. Closing.");
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log(LOG_DEBUG,"connection_exit_process_inbuf(): conn reached eof. Closing.");
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return -1;
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}
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log(LOG_DEBUG,"connection_app_process_inbuf(): state %d.",conn->state);
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log(LOG_DEBUG,"connection_exit_process_inbuf(): state %d.",conn->state);
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switch(conn->state) {
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case APP_CONN_STATE_CONNECTING:
|
||||
log(LOG_DEBUG,"connection_app_process_inbuf(): text from app server while in 'connecting' state. Leaving it on buffer.");
|
||||
case EXIT_CONN_STATE_CONNECTING:
|
||||
log(LOG_DEBUG,"connection_exit_process_inbuf(): text from server while in 'connecting' state. Leaving it on buffer.");
|
||||
return 0;
|
||||
case APP_CONN_STATE_OPEN:
|
||||
return connection_app_package_inbuf(conn);
|
||||
case EXIT_CONN_STATE_OPEN:
|
||||
return connection_exit_package_inbuf(conn);
|
||||
}
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int connection_app_package_inbuf(connection_t *conn) {
|
||||
int connection_exit_package_inbuf(connection_t *conn) {
|
||||
int amount_to_process;
|
||||
cell_t cell;
|
||||
circuit_t *circ;
|
||||
|
||||
assert(conn && conn->type == CONN_TYPE_APP);
|
||||
assert(conn && conn->type == CONN_TYPE_EXIT);
|
||||
|
||||
amount_to_process = conn->inbuf_datalen;
|
||||
|
||||
@ -52,34 +48,34 @@ int connection_app_package_inbuf(connection_t *conn) {
|
||||
|
||||
circ = circuit_get_by_conn(conn);
|
||||
if(!circ) {
|
||||
log(LOG_DEBUG,"connection_app_package_inbuf(): conn has no circuits!");
|
||||
log(LOG_DEBUG,"connection_exit_package_inbuf(): conn has no circuits!");
|
||||
return -1;
|
||||
}
|
||||
|
||||
log(LOG_DEBUG,"connection_app_package_inbuf(): Packaging %d bytes.",cell.length);
|
||||
log(LOG_DEBUG,"connection_exit_package_inbuf(): Packaging %d bytes.",cell.length);
|
||||
cell.aci = circ->p_aci;
|
||||
cell.command = CELL_DATA;
|
||||
if(circuit_deliver_data_cell(&cell, circ, circ->p_conn, 'e') < 0) {
|
||||
log(LOG_DEBUG,"connection_app_package_inbuf(): circuit_deliver_data_cell (backward) failed. Closing.");
|
||||
log(LOG_DEBUG,"connection_exit_package_inbuf(): circuit_deliver_data_cell (backward) failed. Closing.");
|
||||
circuit_close(circ);
|
||||
return 0;
|
||||
}
|
||||
if(amount_to_process > CELL_PAYLOAD_SIZE)
|
||||
return(connection_app_package_inbuf(conn));
|
||||
return(connection_exit_package_inbuf(conn));
|
||||
return 0;
|
||||
}
|
||||
|
||||
int connection_app_finished_flushing(connection_t *conn) {
|
||||
int connection_exit_finished_flushing(connection_t *conn) {
|
||||
int e, len=sizeof(e);
|
||||
|
||||
assert(conn && conn->type == CONN_TYPE_APP);
|
||||
assert(conn && conn->type == CONN_TYPE_EXIT);
|
||||
|
||||
switch(conn->state) {
|
||||
case APP_CONN_STATE_CONNECTING:
|
||||
case EXIT_CONN_STATE_CONNECTING:
|
||||
if (getsockopt(conn->s, SOL_SOCKET, SO_ERROR, &e, &len) < 0) { /* not yet */
|
||||
if(errno != EINPROGRESS){
|
||||
/* yuck. kill it. */
|
||||
log(LOG_DEBUG,"connection_app_finished_flushing(): in-progress connect failed. Removing.");
|
||||
log(LOG_DEBUG,"connection_exit_finished_flushing(): in-progress connect failed. Removing.");
|
||||
return -1;
|
||||
} else {
|
||||
return 0; /* no change, see if next time is better */
|
||||
@ -87,76 +83,76 @@ int connection_app_finished_flushing(connection_t *conn) {
|
||||
}
|
||||
/* the connect has finished. */
|
||||
|
||||
log(LOG_DEBUG,"connection_app_finished_flushing() : Connection to %s:%u established.",
|
||||
log(LOG_DEBUG,"connection_exit_finished_flushing() : Connection to %s:%u established.",
|
||||
conn->address,ntohs(conn->port));
|
||||
|
||||
conn->state = APP_CONN_STATE_OPEN;
|
||||
conn->state = EXIT_CONN_STATE_OPEN;
|
||||
connection_watch_events(conn, POLLIN);
|
||||
return 0;
|
||||
case APP_CONN_STATE_OPEN:
|
||||
case EXIT_CONN_STATE_OPEN:
|
||||
/* FIXME down the road, we'll clear out circuits that are pending to close */
|
||||
connection_watch_events(conn, POLLIN);
|
||||
return 0;
|
||||
default:
|
||||
log(LOG_DEBUG,"Bug: connection_app_finished_flushing() called in unexpected state.");
|
||||
log(LOG_DEBUG,"Bug: connection_exit_finished_flushing() called in unexpected state.");
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int connection_app_process_data_cell(cell_t *cell, connection_t *conn) {
|
||||
int connection_exit_process_data_cell(cell_t *cell, connection_t *conn) {
|
||||
struct hostent *rent;
|
||||
struct sockaddr_in dest_addr;
|
||||
int s;
|
||||
|
||||
/* an outgoing data cell has arrived */
|
||||
|
||||
assert(conn && conn->type == CONN_TYPE_APP);
|
||||
assert(conn && conn->type == CONN_TYPE_EXIT);
|
||||
|
||||
switch(conn->state) {
|
||||
case APP_CONN_STATE_CONNECTING_WAIT:
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): state is connecting_wait. cell length %d.", cell->length);
|
||||
case EXIT_CONN_STATE_CONNECTING_WAIT:
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): state is connecting_wait. cell length %d.", cell->length);
|
||||
if(!conn->ss_received) { /* this cell contains the ss */
|
||||
if(cell->length != sizeof(ss_t)) {
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): Supposed to contain SS but wrong size. Closing.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): Supposed to contain SS but wrong size. Closing.");
|
||||
return -1;
|
||||
}
|
||||
memcpy(&conn->ss, cell->payload, cell->length);
|
||||
if(conn->ss.addr_fmt != SS_ADDR_FMT_ASCII_HOST_PORT) { /* unrecognized address format */
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): SS has unrecognized address format. Closing.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): SS has unrecognized address format. Closing.");
|
||||
return -1;
|
||||
}
|
||||
conn->ss_received = 1;
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): SS received.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): SS received.");
|
||||
} else if (!conn->addr) { /* this cell contains the dest addr */
|
||||
if(!memchr(cell->payload,0,cell->length)) {
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): dest_addr cell has no \\0. Closing.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): dest_addr cell has no \\0. Closing.");
|
||||
return -1;
|
||||
}
|
||||
conn->address = strdup(cell->payload);
|
||||
rent = gethostbyname(cell->payload);
|
||||
if (!rent) {
|
||||
log(LOG_ERR,"connection_app_process_cell(): Could not resolve dest addr %s.",cell->payload);
|
||||
log(LOG_ERR,"connection_exit_process_cell(): Could not resolve dest addr %s.",cell->payload);
|
||||
return -1;
|
||||
}
|
||||
memcpy(&conn->addr, rent->h_addr,rent->h_length);
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): addr %s resolves to %d.",cell->payload,conn->addr);
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): addr %s resolves to %d.",cell->payload,conn->addr);
|
||||
} else if (!conn->port) { /* this cell contains the dest port */
|
||||
if(!memchr(cell->payload,'\0',cell->length)) {
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): dest_port cell has no \\0. Closing.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): dest_port cell has no \\0. Closing.");
|
||||
return -1;
|
||||
}
|
||||
conn->port = atoi(cell->payload);
|
||||
if(!conn->port) { /* bad port */
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): dest_port cell isn't a valid number. Closing.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): dest_port cell isn't a valid number. Closing.");
|
||||
return -1;
|
||||
}
|
||||
/* all the necessary info is here. Start the connect() */
|
||||
s=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);
|
||||
if (s < 0)
|
||||
{
|
||||
log(LOG_ERR,"connection_app_process_cell(): Error creating network socket.");
|
||||
log(LOG_ERR,"connection_exit_process_cell(): Error creating network socket.");
|
||||
return -1;
|
||||
}
|
||||
fcntl(s, F_SETFL, O_NONBLOCK); /* set s to non-blocking */
|
||||
@ -166,47 +162,45 @@ int connection_app_process_data_cell(cell_t *cell, connection_t *conn) {
|
||||
dest_addr.sin_port = conn->port;
|
||||
memcpy((void *)&dest_addr.sin_addr, &conn->addr, sizeof(uint32_t));
|
||||
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): Connecting to %s:%u.",conn->address,ntohs(conn->port));
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): Connecting to %s:%u.",conn->address,ntohs(conn->port));
|
||||
|
||||
if(connect(s,(struct sockaddr *)&dest_addr,sizeof(dest_addr)) < 0){
|
||||
if(errno != EINPROGRESS){
|
||||
/* yuck. kill it. */
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): Connect failed.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): Connect failed.");
|
||||
return -1;
|
||||
} else {
|
||||
/* it's in progress. set state appropriately and return. */
|
||||
conn->s = s;
|
||||
connection_set_poll_socket(conn);
|
||||
conn->state = APP_CONN_STATE_CONNECTING;
|
||||
conn->state = EXIT_CONN_STATE_CONNECTING;
|
||||
|
||||
/* i think only pollout is needed, but i'm curious if pollin ever gets caught -RD */
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): connect in progress, socket %d.",s);
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): connect in progress, socket %d.",s);
|
||||
connection_watch_events(conn, POLLOUT | POLLIN);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* it succeeded. we're connected. */
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): Connection to %s:%u established.",conn->address,ntohs(conn->port));
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): Connection to %s:%u established.",conn->address,ntohs(conn->port));
|
||||
|
||||
conn->s = s;
|
||||
connection_set_poll_socket(conn);
|
||||
conn->state = APP_CONN_STATE_OPEN;
|
||||
conn->state = EXIT_CONN_STATE_OPEN;
|
||||
connection_watch_events(conn, POLLIN);
|
||||
} else { /* i'm not sure what this would be */
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): in connecting_wait, not sure why.");
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): in connecting_wait, not sure why.");
|
||||
}
|
||||
return 0;
|
||||
case APP_CONN_STATE_CONNECTING:
|
||||
log(LOG_DEBUG,"connection_app_process_cell(): Data receiving while connecting. Queueing.");
|
||||
case EXIT_CONN_STATE_CONNECTING:
|
||||
log(LOG_DEBUG,"connection_exit_process_cell(): Data receiving while connecting. Queueing.");
|
||||
/* FIXME kludge. shouldn't call write_to_buf directly. */
|
||||
return write_to_buf(cell->payload, cell->length, &conn->outbuf, &conn->outbuflen, &conn->outbuf_datalen);
|
||||
case APP_CONN_STATE_OPEN:
|
||||
case EXIT_CONN_STATE_OPEN:
|
||||
return connection_write_to_buf(cell->payload, cell->length, conn);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -1,14 +1,6 @@
|
||||
|
||||
#include "or.h"
|
||||
|
||||
connection_t *connection_op_new(void) {
|
||||
return connection_new(CONN_TYPE_OP);
|
||||
}
|
||||
|
||||
connection_t *connection_op_listener_new(void) {
|
||||
return connection_new(CONN_TYPE_OP_LISTENER);
|
||||
}
|
||||
|
||||
int connection_op_process_inbuf(connection_t *conn) {
|
||||
|
||||
assert(conn && conn->type == CONN_TYPE_OP);
|
||||
|
||||
@ -33,7 +33,6 @@ int connection_or_process_inbuf(connection_t *conn) {
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int connection_or_finished_flushing(connection_t *conn) {
|
||||
@ -89,14 +88,6 @@ int connection_or_finished_flushing(connection_t *conn) {
|
||||
|
||||
/*********************/
|
||||
|
||||
connection_t *connection_or_new(void) {
|
||||
return connection_new(CONN_TYPE_OR);
|
||||
}
|
||||
|
||||
connection_t *connection_or_new_listener(void) {
|
||||
return connection_new(CONN_TYPE_OR_LISTENER);
|
||||
}
|
||||
|
||||
void conn_or_init_crypto(connection_t *conn) {
|
||||
int x;
|
||||
|
||||
@ -132,15 +123,14 @@ int connect_to_router(routerinfo_t *router, RSA *prkey, struct sockaddr_in *loca
|
||||
struct sockaddr_in router_addr;
|
||||
int s;
|
||||
|
||||
if ((!router) || (!prkey) || (!local))
|
||||
return -1;
|
||||
assert(router && prkey && local);
|
||||
|
||||
if(router->addr == local->sin_addr.s_addr && router->port == local->sin_port) {
|
||||
/* this is me! don't connect to me. */
|
||||
return 0;
|
||||
}
|
||||
|
||||
conn = connection_or_new();
|
||||
conn = connection_new(CONN_TYPE_OR);
|
||||
|
||||
/* set up conn so it's got all the data we need to remember */
|
||||
conn->addr = router->addr, conn->port = router->port;
|
||||
|
||||
@ -73,7 +73,6 @@ void connection_set_poll_socket(connection_t *conn) {
|
||||
}
|
||||
|
||||
int connection_remove(connection_t *conn) {
|
||||
|
||||
int current_index;
|
||||
|
||||
assert(conn);
|
||||
@ -103,7 +102,6 @@ int connection_remove(connection_t *conn) {
|
||||
}
|
||||
|
||||
connection_t *connection_get_by_addr_port(uint32_t addr, uint16_t port) {
|
||||
|
||||
int i;
|
||||
connection_t *conn;
|
||||
|
||||
@ -115,11 +113,9 @@ connection_t *connection_get_by_addr_port(uint32_t addr, uint16_t port) {
|
||||
}
|
||||
|
||||
return NULL;
|
||||
|
||||
}
|
||||
|
||||
connection_t *connection_get_by_type(int type) {
|
||||
|
||||
int i;
|
||||
connection_t *conn;
|
||||
|
||||
@ -130,7 +126,6 @@ connection_t *connection_get_by_type(int type) {
|
||||
}
|
||||
|
||||
return NULL;
|
||||
|
||||
}
|
||||
|
||||
routerinfo_t *router_get_by_addr_port(uint32_t addr, uint16_t port) {
|
||||
@ -159,7 +154,6 @@ void connection_watch_events(connection_t *conn, short events) {
|
||||
}
|
||||
|
||||
void check_conn_read(int i) {
|
||||
|
||||
int retval;
|
||||
connection_t *conn;
|
||||
|
||||
@ -174,7 +168,7 @@ void check_conn_read(int i) {
|
||||
} else if (conn->type == CONN_TYPE_OR_LISTENER) {
|
||||
retval = connection_or_handle_listener_read(conn);
|
||||
} else {
|
||||
/* else it's an OP, OR, or app */
|
||||
/* else it's an OP, OR, or exit */
|
||||
retval = connection_read_to_buf(conn);
|
||||
if (retval >= 0) { /* all still well */
|
||||
retval = connection_process_inbuf(conn);
|
||||
@ -195,7 +189,6 @@ void check_conn_read(int i) {
|
||||
}
|
||||
|
||||
void check_conn_write(int i) {
|
||||
|
||||
int retval;
|
||||
connection_t *conn;
|
||||
|
||||
@ -209,7 +202,7 @@ void check_conn_write(int i) {
|
||||
log(LOG_DEBUG,"check_conn_write(): Got a listener socket. Can't happen!");
|
||||
retval = -1;
|
||||
} else {
|
||||
/* else it's an OP, OR, or app */
|
||||
/* else it's an OP, OR, or exit */
|
||||
retval = connection_flush_buf(conn); /* conns in CONNECTING state will fall through... */
|
||||
if(retval == 0) { /* it's done flushing */
|
||||
retval = connection_finished_flushing(conn); /* ...and get handled here. */
|
||||
@ -245,26 +238,7 @@ void check_conn_marked(int i) {
|
||||
}
|
||||
}
|
||||
|
||||
#if 0
|
||||
void check_conn_hup(int i) {
|
||||
connection_t *conn;
|
||||
|
||||
if(poll_array[i].revents & POLLHUP) { /* they've hung up */
|
||||
conn = connection_array[i];
|
||||
log(LOG_DEBUG,"check_conn_hup(): socket %d has hung up.",conn->s);
|
||||
connection_remove(conn);
|
||||
connection_free(conn);
|
||||
|
||||
if(i<nfds) { /* we just replaced the one at i with a new one.
|
||||
process it too. */
|
||||
check_conn_hup(i);
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
int do_main_loop(void) {
|
||||
|
||||
int i;
|
||||
|
||||
/* load the routers file */
|
||||
@ -288,14 +262,14 @@ int do_main_loop(void) {
|
||||
|
||||
/* try to connect to all the other ORs, and start the listeners */
|
||||
retry_all_connections(router_array, rarray_len, prkey,
|
||||
options[NetworkPort].r.i,options[EntryPort].r.i);
|
||||
options[NetworkPort].r.i,options[EntryPort].r.i, 0);
|
||||
|
||||
for(;;) {
|
||||
poll(poll_array, nfds, -1); /* poll until we have an event */
|
||||
|
||||
/* do all the reads first, so we can detect closed sockets */
|
||||
for(i=0;i<nfds;i++)
|
||||
check_conn_read(i);
|
||||
check_conn_read(i); /* this also blows away broken connections */
|
||||
|
||||
/* then do the writes */
|
||||
for(i=0;i<nfds;i++)
|
||||
@ -304,28 +278,18 @@ int do_main_loop(void) {
|
||||
/* any of the conns need to be closed now? */
|
||||
for(i=0;i<nfds;i++)
|
||||
check_conn_marked(i);
|
||||
|
||||
#if 0 /* no, check_conn_read() takes care of hups. */
|
||||
/* remove the ones that have disconnected */
|
||||
for(i=0;i<nfds;i++)
|
||||
check_conn_hup(i);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void catch ()
|
||||
{
|
||||
void catch () {
|
||||
errno = 0; /* netcat does this. it looks fun. */
|
||||
|
||||
log(LOG_DEBUG,"Catching ^c, exiting cleanly.");
|
||||
|
||||
exit(0);
|
||||
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
int main(int argc, char *argv[]) {
|
||||
int retval = 0;
|
||||
|
||||
char *conf_filename = NULL; /* configuration file */
|
||||
|
||||
74
src/or/or.h
74
src/or/or.h
@ -49,7 +49,9 @@
|
||||
#define CONN_TYPE_OP 2
|
||||
#define CONN_TYPE_OR_LISTENER 3
|
||||
#define CONN_TYPE_OR 4
|
||||
#define CONN_TYPE_APP 5
|
||||
#define CONN_TYPE_EXIT 5
|
||||
#define CONN_TYPE_AP_LISTENER 6
|
||||
#define CONN_TYPE_AP 7
|
||||
|
||||
#define LISTENER_STATE_READY 0
|
||||
|
||||
@ -60,23 +62,33 @@
|
||||
#define OP_CONN_STATE_CLOSE_WAIT 3 /* have sent a destroy, awaiting a confirmation */
|
||||
#endif
|
||||
|
||||
#define OR_CONN_STATE_CLIENT_CONNECTING 0
|
||||
#define OR_CONN_STATE_CLIENT_SENDING_AUTH 1 /* sending address and info */
|
||||
#define OR_CONN_STATE_CLIENT_AUTH_WAIT 2 /* have sent address and info, waiting */
|
||||
#define OR_CONN_STATE_CLIENT_SENDING_NONCE 3 /* sending nonce, last piece of handshake */
|
||||
#define OR_CONN_STATE_SERVER_AUTH_WAIT 4 /* waiting for address and info */
|
||||
#define OR_CONN_STATE_SERVER_SENDING_AUTH 5 /* writing auth and nonce */
|
||||
#define OR_CONN_STATE_SERVER_NONCE_WAIT 6 /* waiting for confirmation of nonce */
|
||||
#define OR_CONN_STATE_OPEN 7 /* ready to send/receive cells. */
|
||||
/* how to read these states:
|
||||
* foo_CONN_STATE_bar_baz:
|
||||
* "I am acting as a bar, currently in stage baz of talking with a foo."
|
||||
*/
|
||||
#define OR_CONN_STATE_OP_CONNECTING 0
|
||||
#define OR_CONN_STATE_OP_SENDING_KEYS 1
|
||||
#define OR_CONN_STATE_CLIENT_CONNECTING 2
|
||||
#define OR_CONN_STATE_CLIENT_SENDING_AUTH 3 /* sending address and info */
|
||||
#define OR_CONN_STATE_CLIENT_AUTH_WAIT 4 /* have sent address and info, waiting */
|
||||
#define OR_CONN_STATE_CLIENT_SENDING_NONCE 5 /* sending nonce, last piece of handshake */
|
||||
#define OR_CONN_STATE_SERVER_AUTH_WAIT 6 /* waiting for address and info */
|
||||
#define OR_CONN_STATE_SERVER_SENDING_AUTH 7 /* writing auth and nonce */
|
||||
#define OR_CONN_STATE_SERVER_NONCE_WAIT 8 /* waiting for confirmation of nonce */
|
||||
#define OR_CONN_STATE_OPEN 9 /* ready to send/receive cells. */
|
||||
|
||||
#define APP_CONN_STATE_CONNECTING_WAIT 0 /* waiting for standard structure or dest info */
|
||||
#define APP_CONN_STATE_CONNECTING 1
|
||||
#define APP_CONN_STATE_OPEN 2
|
||||
#define EXIT_CONN_STATE_CONNECTING_WAIT 0 /* waiting for standard structure or dest info */
|
||||
#define EXIT_CONN_STATE_CONNECTING 1
|
||||
#define EXIT_CONN_STATE_OPEN 2
|
||||
#if 0
|
||||
#define APP_CONN_STATE_CLOSE 3 /* flushing the buffer, then will close */
|
||||
#define APP_CONN_STATE_CLOSE_WAIT 4 /* have sent a destroy, awaiting a confirmation */
|
||||
#define EXIT_CONN_STATE_CLOSE 3 /* flushing the buffer, then will close */
|
||||
#define EXIT_CONN_STATE_CLOSE_WAIT 4 /* have sent a destroy, awaiting a confirmation */
|
||||
#endif
|
||||
|
||||
#define AP_CONN_STATE_SS_WAIT 0
|
||||
#define AP_CONN_STATE_OR_WAIT 1
|
||||
#define AP_CONN_STATE_OPEN 2
|
||||
|
||||
#define CIRCUIT_STATE_OPEN_WAIT 0 /* receiving/processing the onion */
|
||||
#define CIRCUIT_STATE_OPEN 1 /* onion processed, ready to send data along the connection */
|
||||
#define CIRCUIT_STATE_CLOSE_WAIT1 2 /* sent two "destroy" signals, waiting for acks */
|
||||
@ -130,7 +142,7 @@ typedef struct
|
||||
uint32_t addr; /* these two uniquely identify a router */
|
||||
uint16_t port;
|
||||
|
||||
/* used by app: */
|
||||
/* used by exit: */
|
||||
|
||||
ss_t ss; /* standard structure */
|
||||
int ss_received; /* size of ss, received so far */
|
||||
@ -229,26 +241,26 @@ int getargs(int argc,char *argv[], char *args,char **conf_filename, int *logleve
|
||||
|
||||
/********************************* buffers.c ***************************/
|
||||
|
||||
int buf_new(char **pbuf, size_t *pbuflen, size_t *pbuf_datalen);
|
||||
int buf_new(char **buf, size_t *buflen, size_t *buf_datalen);
|
||||
|
||||
int buf_free(char *buf);
|
||||
void buf_free(char *buf);
|
||||
|
||||
int read_to_buf(int s, char **pbuf, size_t *pbuflen, size_t *pbuf_datalen, int *preached_eof);
|
||||
int read_to_buf(int s, char **buf, size_t *buflen, size_t *buf_datalen, int *reached_eof);
|
||||
/* grab from s, put onto buf, return how many bytes read */
|
||||
|
||||
int flush_buf(int s, char **pbuf, size_t *pbuflen, size_t *pbuf_datalen);
|
||||
int flush_buf(int s, char **buf, size_t *buflen, size_t *buf_datalen);
|
||||
/* push from buf onto s
|
||||
* then memmove to front of buf
|
||||
* return -1 or how many bytes remain on the buf */
|
||||
|
||||
int write_to_buf(char *string, size_t string_len,
|
||||
char **pbuf, size_t *pbuflen, size_t *pbuf_datalen);
|
||||
char **buf, size_t *buflen, size_t *buf_datalen);
|
||||
/* append string to buf (growing as needed, return -1 if "too big")
|
||||
* return total number of bytes on the buf
|
||||
*/
|
||||
|
||||
int fetch_from_buf(char *string, size_t string_len,
|
||||
char **pbuf, size_t *pbuflen, size_t *pbuf_datalen);
|
||||
char **buf, size_t *buflen, size_t *buf_datalen);
|
||||
/* if there is string_len bytes in buf, write them onto string,
|
||||
* * then memmove buf back (that is, remove them from buf) */
|
||||
|
||||
@ -305,7 +317,7 @@ int connection_handle_listener_read(connection_t *conn, int new_type, int new_st
|
||||
|
||||
/* start all connections that should be up but aren't */
|
||||
int retry_all_connections(routerinfo_t **router_array, int rarray_len,
|
||||
RSA *prkey, uint16_t or_port, uint16_t op_port);
|
||||
RSA *prkey, uint16_t or_port, uint16_t op_port, uint16_t ap_port);
|
||||
|
||||
int connection_read_to_buf(connection_t *conn);
|
||||
|
||||
@ -328,9 +340,6 @@ int connection_finished_flushing(connection_t *conn);
|
||||
int connection_or_process_inbuf(connection_t *conn);
|
||||
int connection_or_finished_flushing(connection_t *conn);
|
||||
|
||||
connection_t *connection_or_new(void);
|
||||
connection_t *connection_or_listener_new(void);
|
||||
|
||||
void conn_or_init_crypto(connection_t *conn);
|
||||
|
||||
int or_handshake_client_process_auth(connection_t *conn);
|
||||
@ -346,9 +355,6 @@ int connection_or_handle_listener_read(connection_t *conn);
|
||||
|
||||
/********************************* connection_op.c ***************************/
|
||||
|
||||
connection_t *connection_op_new(void);
|
||||
connection_t *connection_op_listener_new(void);
|
||||
|
||||
int op_handshake_process_keys(connection_t *conn);
|
||||
|
||||
int connection_op_process_inbuf(connection_t *conn);
|
||||
@ -359,15 +365,13 @@ int connection_op_create_listener(RSA *prkey, struct sockaddr_in *local);
|
||||
|
||||
int connection_op_handle_listener_read(connection_t *conn);
|
||||
|
||||
/********************************* connection_app.c ***************************/
|
||||
/********************************* connection_exit.c ***************************/
|
||||
|
||||
connection_t *connection_app_new(void);
|
||||
int connection_exit_process_inbuf(connection_t *conn);
|
||||
int connection_exit_package_inbuf(connection_t *conn);
|
||||
int connection_exit_process_data_cell(cell_t *cell, connection_t *conn);
|
||||
|
||||
int connection_app_process_inbuf(connection_t *conn);
|
||||
int connection_app_package_inbuf(connection_t *conn);
|
||||
int connection_app_process_data_cell(cell_t *cell, connection_t *conn);
|
||||
|
||||
int connection_app_finished_flushing(connection_t *conn);
|
||||
int connection_exit_finished_flushing(connection_t *conn);
|
||||
|
||||
/********************************* main.c ***************************/
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user