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Replace sprintf with snprintf

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svn:r2602
This commit is contained in:
Nick Mathewson 2004-10-27 05:53:07 +00:00
parent 7d4854301c
commit bc62f8e983
13 changed files with 39 additions and 36 deletions
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2
doc/TODO
View File

@ -82,7 +82,7 @@ R - learn from ben about his openssl-reinitialization-trick to
forbidden ports when fascistfirewall blocks all good dirservers.
0.0.9 and beyond:
- fix sprintf's to snprintf's?
o fix sprintf's to snprintf's?
. Make intro points and rendezvous points accept $KEYID in addition
to nicknames.
o Specify

2
src/common/log.c
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@ -142,7 +142,7 @@ static INLINE char *format_msg(char *buf, size_t buf_len,
/** Helper: sends a message to the appropriate logfiles, at loglevel
* <b>severity</b>. If provided, <b>funcname</b> is prepended to the
* message. The actual message is derived as from vsprintf(format,ap).
* message. The actual message is derived as from vsnprintf(format,ap).
*/
static void
logv(int severity, const char *funcname, const char *format, va_list ap)

4
src/common/tortls.c
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@ -294,12 +294,12 @@ tor_tls_context_new(crypto_pk_env_t *identity,
EVP_PKEY *pkey = NULL;
tor_tls_context *result = NULL;
X509 *cert = NULL, *idcert = NULL;
char nn2[1024];
char nn2[128];
int client_only;
SSL_CTX **ctx;
if (!nickname)
nickname = "null";
sprintf(nn2, "%s <identity>", nickname);
snprintf(nn2, sizeof(nn2), "%s <identity>", nickname);
tor_tls_init();

6
src/common/util.c
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@ -1763,6 +1763,7 @@ char *expand_filename(const char *filename)
tor_assert(filename);
/* XXXX Should eventually check for ~username/ */
if (!strncmp(filename,"~/",2)) {
size_t len;
const char *home = getenv("HOME");
char *result;
if (!home) {
@ -1770,8 +1771,9 @@ char *expand_filename(const char *filename)
return NULL;
}
/* minus two characters for ~/, plus one for /, plus one for NUL. */
result = tor_malloc(strlen(home)+strlen(filename)+16);
sprintf(result,"%s/%s",home,filename+2);
len = strlen(home)+strlen(filename)+16;
result = tor_malloc(len);
snprintf(result,len,"%s/%s",home,filename+2);
return result;
} else {
return tor_strdup(filename);

2
src/or/circuitbuild.c
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@ -1105,7 +1105,7 @@ static routerinfo_t *choose_good_entry_server(cpath_build_state_t *state)
for(i=0; i < smartlist_len(rl->routers); i++) {
r = smartlist_get(rl->routers, i);
sprintf(buf, "%d", r->or_port);
snprintf(buf, sizeof(buf), "%d", r->or_port);
if(!smartlist_string_isin(options.FirewallPorts, buf))
smartlist_add(excluded, r);
}

10
src/or/directory.c
View File

@ -131,7 +131,7 @@ directory_post_to_dirservers(uint8_t purpose, const char *payload,
* descriptor -- those use Tor. */
if (options.FascistFirewall && purpose == DIR_PURPOSE_UPLOAD_DIR &&
!options.HttpProxy) {
sprintf(buf,"%d",ds->dir_port);
snprintf(buf,sizeof(buf),"%d",ds->dir_port);
if (!smartlist_string_isin(options.FirewallPorts, buf))
continue;
}
@ -325,10 +325,10 @@ directory_send_command(connection_t *conn, const char *platform,
if(conn->port == 80) {
strlcpy(hoststring, conn->address, sizeof(hoststring));
} else {
sprintf(hoststring, "%s:%d", conn->address, conn->port);
snprintf(hoststring, sizeof(hoststring),"%s:%d",conn->address, conn->port);
}
if(options.HttpProxy) {
sprintf(proxystring, "http://%s", hoststring);
snprintf(proxystring, sizeof(proxystring),"http://%s", hoststring);
} else {
proxystring[0] = 0;
}
@ -361,7 +361,7 @@ directory_send_command(connection_t *conn, const char *platform,
conn->rend_query[payload_len] = 0;
httpcommand = "GET";
sprintf(url, "%s/rendezvous/%s", use_newer ? "/tor" : "", payload);
snprintf(url, sizeof(url), "%s/rendezvous/%s", use_newer ? "/tor" : "", payload);
/* XXX We're using payload here to mean something other than
* payload of the http post. This is probably bad, and should
@ -373,7 +373,7 @@ directory_send_command(connection_t *conn, const char *platform,
case DIR_PURPOSE_UPLOAD_RENDDESC:
tor_assert(payload);
httpcommand = "POST";
sprintf(url, "%s/rendezvous/publish", use_newer ? "/tor" : "");
snprintf(url, sizeof(url), "%s/rendezvous/publish", use_newer ? "/tor" : "");
break;
}

2
src/or/dirserv.c
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@ -835,7 +835,7 @@ static int generate_runningrouters(crypto_pk_env_t *private_key)
#endif
published_on = time(NULL);
format_iso_time(published, published_on);
sprintf(s, "network-status\n"
snprintf(s, len, "network-status\n"
"published %s\n"
"router-status %s\n"
"opt dir-signing-key %s\n"

4
src/or/main.c
View File

@ -757,7 +757,7 @@ static int do_hup(void) {
}
if(authdir_mode()) {
/* reload the approved-routers file */
sprintf(keydir,"%s/approved-routers", get_data_directory(&options));
snprintf(keydir,sizeof(keydir),"%s/approved-routers", get_data_directory(&options));
log_fn(LOG_INFO,"Reloading approved fingerprints from %s...",keydir);
if(dirserv_parse_fingerprint_file(keydir) < 0) {
log_fn(LOG_WARN, "Error reloading fingerprints. Continuing with old list.");
@ -772,7 +772,7 @@ static int do_hup(void) {
dnsworkers_rotate();
/* Rebuild fresh descriptor as needed. */
router_rebuild_descriptor();
sprintf(keydir,"%s/router.desc", get_data_directory(&options));
snprintf(keydir,sizeof(keydir),"%s/router.desc", get_data_directory(&options));
log_fn(LOG_INFO,"Dumping descriptor to %s...",keydir);
if (write_str_to_file(keydir, router_get_my_descriptor(), 0)) {
return -1;

2
src/or/rendservice.c
View File

@ -309,7 +309,7 @@ int rend_service_load_keys(void)
log_fn(LOG_WARN, "Directory name too long: '%s'", s->directory);
return -1;
}
sprintf(buf, "%s.onion\n", s->service_id);
snprintf(buf, sizeof(buf),"%s.onion\n", s->service_id);
if (write_str_to_file(fname,buf,0)<0)
return -1;
}

6
src/or/rephist.c
View File

@ -528,7 +528,7 @@ char *rep_hist_get_bandwidth_lines(void)
for (r=0;r<2;++r) {
b = r?read_array:write_array;
format_iso_time(t, b->next_period-NUM_SECS_BW_SUM_INTERVAL);
sprintf(cp, "opt %s %s (%d s) ", r?"read-history ":"write-history", t,
snprintf(cp, len-(cp-buf), "opt %s %s (%d s) ", r?"read-history ":"write-history", t,
NUM_SECS_BW_SUM_INTERVAL);
cp += strlen(cp);
@ -543,9 +543,9 @@ char *rep_hist_get_bandwidth_lines(void)
for (n=0; n<b->num_maxes_set; ++n,++i) {
while (i >= NUM_TOTALS) i -= NUM_TOTALS;
if (n==(b->num_maxes_set-1))
sprintf(cp, "%d", b->totals[i]);
snprintf(cp, len-(cp-buf), "%d", b->totals[i]);
else
sprintf(cp, "%d,", b->totals[i]);
snprintf(cp, len-(cp-buf), "%d,", b->totals[i]);
cp += strlen(cp);
}
strcat(cp, "\n");

27
src/or/router.c
View File

@ -101,9 +101,10 @@ void rotate_onion_key(void)
char fname[512];
char fname_prev[512];
crypto_pk_env_t *prkey;
sprintf(fname,"%s/keys/secret_onion_key",get_data_directory(&options));
sprintf(fname_prev,"%s/keys/secret_onion_key.old",
get_data_directory(&options));
snprintf(fname,sizeof(fname),
"%s/keys/secret_onion_key",get_data_directory(&options));
snprintf(fname_prev,sizeof(fname_prev),
"%s/keys/secret_onion_key.old",get_data_directory(&options));
if (!(prkey = crypto_new_pk_env())) {
log(LOG_ERR, "Error creating crypto environment.");
goto error;
@ -263,27 +264,27 @@ int init_keys(void) {
return -1;
}
/* Check the key directory. */
sprintf(keydir,"%s/keys", datadir);
snprintf(keydir,sizeof(keydir),"%s/keys", datadir);
if (check_private_dir(keydir, 1)) {
return -1;
}
cp = keydir + strlen(keydir); /* End of string. */
/* 1. Read identity key. Make it if none is found. */
sprintf(keydir,"%s/keys/identity.key",datadir);
sprintf(keydir2,"%s/keys/secret_id_key",datadir);
snprintf(keydir,sizeof(keydir),"%s/keys/identity.key",datadir);
snprintf(keydir2,sizeof(keydir2),"%s/keys/secret_id_key",datadir);
log_fn(LOG_INFO,"Reading/making identity key %s...",keydir2);
prkey = init_key_from_file_name_changed(keydir,keydir2);
if (!prkey) return -1;
set_identity_key(prkey);
/* 2. Read onion key. Make it if none is found. */
sprintf(keydir,"%s/keys/onion.key",datadir);
sprintf(keydir2,"%s/keys/secret_onion_key",datadir);
snprintf(keydir,sizeof(keydir),"%s/keys/onion.key",datadir);
snprintf(keydir2,sizeof(keydir2),"%s/keys/secret_onion_key",datadir);
log_fn(LOG_INFO,"Reading/making onion key %s...",keydir2);
prkey = init_key_from_file_name_changed(keydir,keydir2);
if (!prkey) return -1;
set_onion_key(prkey);
sprintf(keydir,"%s/keys/secret_onion_key.old",datadir);
snprintf(keydir,sizeof(keydir),"%s/keys/secret_onion_key.old",datadir);
if (file_status(keydir) == FN_FILE) {
prkey = init_key_from_file(keydir);
if (prkey)
@ -315,13 +316,13 @@ int init_keys(void) {
}
}
sprintf(keydir,"%s/router.desc", datadir);
snprintf(keydir,sizeof(keydir),"%s/router.desc", datadir);
log_fn(LOG_INFO,"Dumping descriptor to %s...",keydir);
if (write_str_to_file(keydir, mydesc,0)) {
return -1;
}
/* 5. Dump fingerprint to 'fingerprint' */
sprintf(keydir,"%s/fingerprint", datadir);
snprintf(keydir,sizeof(keydir),"%s/fingerprint", datadir);
log_fn(LOG_INFO,"Dumping fingerprint to %s...",keydir);
tor_assert(strlen(options.Nickname) <= MAX_NICKNAME_LEN);
strcpy(fingerprint, options.Nickname);
@ -337,7 +338,7 @@ int init_keys(void) {
if(!authdir_mode())
return 0;
/* 6. [authdirserver only] load approved-routers file */
sprintf(keydir,"%s/approved-routers", datadir);
snprintf(keydir,sizeof(keydir),"%s/approved-routers", datadir);
log_fn(LOG_INFO,"Loading approved fingerprints from %s...",keydir);
if(dirserv_parse_fingerprint_file(keydir) < 0) {
log_fn(LOG_ERR, "Error loading fingerprints");
@ -349,7 +350,7 @@ int init_keys(void) {
add_trusted_dir_server(options.Address, (uint16_t)options.DirPort, digest);
}
/* 7. [authdirserver only] load old directory, if it's there */
sprintf(keydir,"%s/cached-directory", datadir);
snprintf(keydir,sizeof(keydir),"%s/cached-directory", datadir);
log_fn(LOG_INFO,"Loading cached directory from %s...",keydir);
cp = read_file_to_str(keydir,0);
if(!cp) {

4
src/or/routerlist.c
View File

@ -167,7 +167,7 @@ router_pick_directory_server_impl(int requireothers, int fascistfirewall)
if(requireothers && router_is_me(router))
continue;
if(fascistfirewall) {
sprintf(buf,"%d",router->dir_port);
snprintf(buf,sizeof(buf),"%d",router->dir_port);
if (!smartlist_string_isin(options.FirewallPorts, buf))
continue;
}
@ -202,7 +202,7 @@ router_pick_trusteddirserver_impl(int requireother, int fascistfirewall)
!memcmp(me->identity_digest, d->digest, DIGEST_LEN))
continue;
if (fascistfirewall) {
sprintf(buf,"%d",d->dir_port);
snprintf(buf,sizeof(buf),"%d",d->dir_port);
if (!smartlist_string_isin(options.FirewallPorts, buf))
continue;
}

4
src/or/test.c
View File

@ -50,7 +50,7 @@ setup_directory()
int r;
if (is_setup) return;
sprintf(temp_dir, "/tmp/tor_test_%d", (int) getpid());
snprintf(temp_dir, sizeof(temp_dir), "/tmp/tor_test_%d", (int) getpid());
#ifdef MS_WINDOWS
r = mkdir(temp_dir);
#else
@ -69,7 +69,7 @@ get_fname(const char *name)
{
static char buf[1024];
setup_directory();
sprintf(buf,"%s/%s",temp_dir,name);
snprintf(buf,sizeof(buf),"%s/%s",temp_dir,name);
return buf;
}