mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-10 13:13:44 +01:00
checkSpace.pl now forbids more identifiers.
The functions it warns about are: assert, memcmp, strcat, strcpy, sprintf, malloc, free, realloc, strdup, strndup, calloc. Also, fix a few lingering instances of these in the code. Use other conventions to indicate _intended_ use of assert and malloc/realloc/etc.
This commit is contained in:
parent
4e3f9c1f3a
commit
5927ed8d33
@ -156,6 +156,25 @@ for $fn (@ARGV) {
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$in_func_head = 0;
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}
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}
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## Check for forbidden functions except when they are
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# explicitly permitted
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if (/\bassert\(/ && not /assert OK/) {
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print "assert :$fn:$. (use tor_assert)\n";
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}
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if (/\bmemcmp\(/ && not /memcmp OK/) {
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print "memcmp :$fn:$. (use {tor,fast}_mem{eq,neq,cmp}\n";
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}
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# always forbidden.
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if (not / OVERRIDE /) {
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if (/\bstrcat\(/ or /\bstrcpy\(/ or /\bsprintf\(/) {
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print "$& :$fn:$.\n";
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}
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if (/\bmalloc\(/ or /\bfree\(/ or /\brealloc\(/ or
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/\bstrdup\(/ or /\bstrndup\(/ or /\bcalloc\(/) {
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print "$& :$fn:$. (use tor_malloc, tor_free, etc)\n";
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}
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}
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}
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}
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## Warn if the file doesn't end with a blank line.
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@ -117,7 +117,7 @@ log_backtrace(int severity, int domain, const char *msg)
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for (i=0; i < depth; ++i) {
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tor_log(severity, domain, " %s", symbols[i]);
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}
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free(symbols);
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raw_free(symbols);
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done:
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tor_mutex_release(&cb_buf_mutex);
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@ -190,7 +190,7 @@ install_bt_handler(void)
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size_t depth = backtrace(cb_buf, MAX_DEPTH);
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symbols = backtrace_symbols(cb_buf, (int) depth);
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if (symbols)
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free(symbols);
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raw_free(symbols);
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}
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return rv;
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@ -2350,7 +2350,7 @@ make_path_absolute(char *fname)
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/* We don't want to assume that tor_free can free a string allocated
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* with malloc. On failure, return fname (it's better than nothing). */
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char *absfname = tor_strdup(absfname_malloced ? absfname_malloced : fname);
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if (absfname_malloced) free(absfname_malloced);
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if (absfname_malloced) raw_free(absfname_malloced);
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return absfname;
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#else
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@ -526,7 +526,7 @@ void* strmap_remove_lc(strmap_t *map, const char *key);
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return (valtype*)digestmap_remove((digestmap_t*)map, key); \
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} \
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ATTR_UNUSED static inline void \
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prefix##free(maptype *map, void (*free_val)(void*)) \
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prefix##f##ree(maptype *map, void (*free_val)(void*)) \
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{ \
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digestmap_free((digestmap_t*)map, free_val); \
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} \
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@ -47,6 +47,8 @@
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#define TRUNCATED_STR_LEN 14
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/** @} */
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#define raw_assert(x) assert(x) // assert OK
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/** Information for a single logfile; only used in log.c */
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typedef struct logfile_t {
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struct logfile_t *next; /**< Next logfile_t in the linked list. */
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@ -75,7 +77,7 @@ sev_to_string(int severity)
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case LOG_ERR: return "err";
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default: /* Call assert, not tor_assert, since tor_assert
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* calls log on failure. */
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assert(0); return "UNKNOWN"; // LCOV_EXCL_LINE
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raw_assert(0); return "UNKNOWN"; // LCOV_EXCL_LINE
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}
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}
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@ -95,7 +97,7 @@ should_log_function_name(log_domain_mask_t domain, int severity)
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return (domain & (LD_BUG|LD_NOFUNCNAME)) == LD_BUG;
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default:
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/* Call assert, not tor_assert, since tor_assert calls log on failure. */
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assert(0); return 0; // LCOV_EXCL_LINE
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raw_assert(0); return 0; // LCOV_EXCL_LINE
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}
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}
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@ -293,7 +295,7 @@ format_msg(char *buf, size_t buf_len,
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char *end_of_prefix;
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char *buf_end;
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assert(buf_len >= 16); /* prevent integer underflow and general stupidity */
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raw_assert(buf_len >= 16); /* prevent integer underflow and stupidity */
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buf_len -= 2; /* subtract 2 characters so we have room for \n\0 */
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buf_end = buf+buf_len; /* point *after* the last char we can write to */
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@ -482,12 +484,12 @@ logv,(int severity, log_domain_mask_t domain, const char *funcname,
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int callbacks_deferred = 0;
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/* Call assert, not tor_assert, since tor_assert calls log on failure. */
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assert(format);
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raw_assert(format);
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/* check that severity is sane. Overrunning the masks array leads to
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* interesting and hard to diagnose effects */
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assert(severity >= LOG_ERR && severity <= LOG_DEBUG);
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raw_assert(severity >= LOG_ERR && severity <= LOG_DEBUG);
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/* check that we've initialised the log mutex before we try to lock it */
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assert(log_mutex_initialized);
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raw_assert(log_mutex_initialized);
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LOCK_LOGS();
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if ((! (domain & LD_NOCB)) && pending_cb_messages
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@ -658,7 +660,7 @@ tor_log_update_sigsafe_err_fds(void)
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if (!found_real_stderr &&
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int_array_contains(sigsafe_log_fds, n_sigsafe_log_fds, STDOUT_FILENO)) {
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/* Don't use a virtual stderr when we're also logging to stdout. */
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assert(n_sigsafe_log_fds >= 2); /* Don't use assert inside log functions*/
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raw_assert(n_sigsafe_log_fds >= 2); /* Don't tor_assert inside log fns */
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sigsafe_log_fds[0] = sigsafe_log_fds[--n_sigsafe_log_fds];
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}
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@ -147,7 +147,7 @@ tor_malloc_(size_t size DMALLOC_PARAMS)
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#ifdef USE_DMALLOC
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result = dmalloc_malloc(file, line, size, DMALLOC_FUNC_MALLOC, 0, 0);
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#else
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result = malloc(size);
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result = raw_malloc(size);
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#endif
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if (PREDICT_UNLIKELY(result == NULL)) {
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@ -246,7 +246,7 @@ tor_realloc_(void *ptr, size_t size DMALLOC_PARAMS)
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#ifdef USE_DMALLOC
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result = dmalloc_realloc(file, line, ptr, size, DMALLOC_FUNC_REALLOC, 0);
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#else
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result = realloc(ptr, size);
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result = raw_realloc(ptr, size);
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#endif
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if (PREDICT_UNLIKELY(result == NULL)) {
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@ -285,7 +285,7 @@ tor_strdup_(const char *s DMALLOC_PARAMS)
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#ifdef USE_DMALLOC
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duplicate = dmalloc_strdup(file, line, s, 0);
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#else
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duplicate = strdup(s);
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duplicate = raw_strdup(s);
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#endif
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if (PREDICT_UNLIKELY(duplicate == NULL)) {
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/* LCOV_EXCL_START */
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@ -82,7 +82,7 @@ extern int dmalloc_free(const char *file, const int line, void *pnt,
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*/
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#define tor_free(p) STMT_BEGIN \
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if (PREDICT_LIKELY((p)!=NULL)) { \
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free(p); \
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raw_free(p); \
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(p)=NULL; \
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} \
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STMT_END
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@ -99,6 +99,14 @@ extern int dmalloc_free(const char *file, const int line, void *pnt,
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#define tor_memdup(s, n) tor_memdup_(s, n DMALLOC_ARGS)
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#define tor_memdup_nulterm(s, n) tor_memdup_nulterm_(s, n DMALLOC_ARGS)
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/* Aliases for the underlying system malloc/realloc/free. Only use
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* them to indicate "I really want the underlying system function, I know
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* what I'm doing." */
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#define raw_malloc malloc
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#define raw_realloc realloc
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#define raw_free free
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#define raw_strdup strdup
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void tor_log_mallinfo(int severity);
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/** Return the offset of <b>member</b> within the type <b>tp</b>, in bytes */
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@ -838,7 +838,7 @@ channel_free(channel_t *chan)
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}
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/* Call a free method if there is one */
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if (chan->free) chan->free(chan);
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if (chan->free_fn) chan->free_fn(chan);
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channel_clear_remote_end(chan);
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@ -878,7 +878,7 @@ channel_listener_free(channel_listener_t *chan_l)
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tor_assert(!(chan_l->registered));
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/* Call a free method if there is one */
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if (chan_l->free) chan_l->free(chan_l);
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if (chan_l->free_fn) chan_l->free_fn(chan_l);
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/*
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* We're in CLOSED or ERROR, so the incoming channel queue is already
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@ -916,7 +916,7 @@ channel_force_free(channel_t *chan)
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}
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/* Call a free method if there is one */
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if (chan->free) chan->free(chan);
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if (chan->free_fn) chan->free_fn(chan);
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channel_clear_remote_end(chan);
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@ -958,7 +958,7 @@ channel_listener_force_free(channel_listener_t *chan_l)
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chan_l);
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/* Call a free method if there is one */
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if (chan_l->free) chan_l->free(chan_l);
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if (chan_l->free_fn) chan_l->free_fn(chan_l);
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/*
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* The incoming list just gets emptied and freed; we request close on
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@ -90,7 +90,7 @@ struct channel_s {
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/* Methods implemented by the lower layer */
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/** Free a channel */
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void (*free)(channel_t *);
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void (*free_fn)(channel_t *);
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/** Close an open channel */
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void (*close)(channel_t *);
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/** Describe the transport subclass for this channel */
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@ -273,7 +273,7 @@ struct channel_listener_s {
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/* Methods implemented by the lower layer */
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/** Free a channel */
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void (*free)(channel_listener_t *);
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void (*free_fn)(channel_listener_t *);
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/** Close an open channel */
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void (*close)(channel_listener_t *);
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/** Describe the transport subclass for this channel */
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@ -117,7 +117,7 @@ channel_tls_common_init(channel_tls_t *tlschan)
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chan->state = CHANNEL_STATE_OPENING;
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chan->close = channel_tls_close_method;
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chan->describe_transport = channel_tls_describe_transport_method;
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chan->free = channel_tls_free_method;
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chan->free_fn = channel_tls_free_method;
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chan->get_overhead_estimate = channel_tls_get_overhead_estimate_method;
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chan->get_remote_addr = channel_tls_get_remote_addr_method;
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chan->get_remote_descr = channel_tls_get_remote_descr_method;
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@ -578,8 +578,8 @@ commit_is_authoritative(const sr_commit_t *commit,
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tor_assert(commit);
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tor_assert(voter_key);
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return !memcmp(commit->rsa_identity, voter_key,
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sizeof(commit->rsa_identity));
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return fast_memeq(commit->rsa_identity, voter_key,
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sizeof(commit->rsa_identity));
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}
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/* Decide if the newly received <b>commit</b> should be kept depending on
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@ -557,7 +557,7 @@ bench_dh(void)
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dh_b, dh_pubkey_a, sizeof(dh_pubkey_a),
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secret_b, sizeof(secret_b));
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tor_assert(slen_a == slen_b);
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tor_assert(!memcmp(secret_a, secret_b, slen_a));
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tor_assert(fast_memeq(secret_a, secret_b, slen_a));
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crypto_dh_free(dh_a);
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crypto_dh_free(dh_b);
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}
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@ -595,7 +595,7 @@ bench_ecdh_impl(int nid, const char *name)
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NULL);
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tor_assert(slen_a == slen_b);
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tor_assert(!memcmp(secret_a, secret_b, slen_a));
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tor_assert(fast_memeq(secret_a, secret_b, slen_a));
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EC_KEY_free(dh_a);
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EC_KEY_free(dh_b);
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}
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@ -5,6 +5,7 @@
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#include "crypto.h"
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#include "compat.h"
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#include "util.h"
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static unsigned fill_a_buffer_memset(void) __attribute__((noinline));
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static unsigned fill_a_buffer_memwipe(void) __attribute__((noinline));
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@ -98,29 +99,29 @@ static char *heap_buf = NULL;
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static unsigned
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fill_heap_buffer_memset(void)
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{
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char *buf = heap_buf = malloc(BUF_LEN);
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char *buf = heap_buf = raw_malloc(BUF_LEN);
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FILL_BUFFER_IMPL()
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memset(buf, 0, BUF_LEN);
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free(buf);
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raw_free(buf);
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return sum;
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}
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static unsigned
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fill_heap_buffer_memwipe(void)
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{
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char *buf = heap_buf = malloc(BUF_LEN);
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char *buf = heap_buf = raw_malloc(BUF_LEN);
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FILL_BUFFER_IMPL()
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memwipe(buf, 0, BUF_LEN);
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free(buf);
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raw_free(buf);
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return sum;
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}
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static unsigned
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fill_heap_buffer_nothing(void)
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{
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char *buf = heap_buf = malloc(BUF_LEN);
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char *buf = heap_buf = raw_malloc(BUF_LEN);
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FILL_BUFFER_IMPL()
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free(buf);
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raw_free(buf);
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return sum;
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}
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@ -81,7 +81,7 @@ test_addr_basic(void *arg)
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#define test_op_ip6_(a,op,b,e1,e2) \
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STMT_BEGIN \
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tt_assert_test_fmt_type(a,b,e1" "#op" "e2,struct in6_addr*, \
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(memcmp(val1_->s6_addr, val2_->s6_addr, 16) op 0), \
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(fast_memcmp(val1_->s6_addr, val2_->s6_addr, 16) op 0), \
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char *, "%s", \
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{ char *cp; \
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cp = print_ = tor_malloc(64); \
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@ -1037,17 +1037,17 @@ test_addr_make_null(void *data)
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(void) data;
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/* Ensure that before tor_addr_make_null, addr != 0's */
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memset(addr, 1, sizeof(*addr));
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tt_int_op(memcmp(addr, zeros, sizeof(*addr)), OP_NE, 0);
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tt_int_op(fast_memcmp(addr, zeros, sizeof(*addr)), OP_NE, 0);
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/* Test with AF == AF_INET */
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zeros->family = AF_INET;
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tor_addr_make_null(addr, AF_INET);
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tt_int_op(memcmp(addr, zeros, sizeof(*addr)), OP_EQ, 0);
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tt_int_op(fast_memcmp(addr, zeros, sizeof(*addr)), OP_EQ, 0);
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tt_str_op(tor_addr_to_str(buf, addr, sizeof(buf), 0), OP_EQ, "0.0.0.0");
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/* Test with AF == AF_INET6 */
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memset(addr, 1, sizeof(*addr));
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zeros->family = AF_INET6;
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tor_addr_make_null(addr, AF_INET6);
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tt_int_op(memcmp(addr, zeros, sizeof(*addr)), OP_EQ, 0);
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tt_int_op(fast_memcmp(addr, zeros, sizeof(*addr)), OP_EQ, 0);
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tt_str_op(tor_addr_to_str(buf, addr, sizeof(buf), 0), OP_EQ, "::");
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done:
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tor_free(addr);
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@ -2258,7 +2258,7 @@ test_crypto_ed25519_simple(void *arg)
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tt_int_op(0, OP_EQ, ed25519_sign(&manual_sig, (uint8_t *)prefixed_msg,
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strlen(prefixed_msg), &kp1));
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tor_free(prefixed_msg);
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tt_assert(!memcmp(sig1.sig, manual_sig.sig, sizeof(sig1.sig)));
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tt_assert(fast_memeq(sig1.sig, manual_sig.sig, sizeof(sig1.sig)));
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/* Test that prefixed checksig verifies it properly. */
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tt_int_op(0, OP_EQ, ed25519_checksig_prefixed(&sig1, msg, msg_len,
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@ -2052,9 +2052,9 @@ test_a_networkstatus(
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tt_int_op(4,OP_EQ, smartlist_len(con->voters)); /*3 voters, 1 legacy key.*/
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/* The voter id digests should be in this order. */
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tt_assert(memcmp(cert2->cache_info.identity_digest,
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tt_assert(fast_memcmp(cert2->cache_info.identity_digest,
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cert1->cache_info.identity_digest,DIGEST_LEN)<0);
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tt_assert(memcmp(cert1->cache_info.identity_digest,
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tt_assert(fast_memcmp(cert1->cache_info.identity_digest,
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cert3->cache_info.identity_digest,DIGEST_LEN)<0);
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test_same_voter(smartlist_get(con->voters, 1),
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smartlist_get(v2->voters, 0));
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