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Remove unnecessary memory allocation limit checks and rename max-allocation related functions #1137

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merged 12 commits into from
Mar 15, 2024
Merged

Remove unnecessary memory allocation limit checks and rename max-allocation related functions #1137

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862c5fe
Optimization: replace limited allocation calls
micahsnyder May 8, 2022
65862b4
Rename clamav memory allocation functions
micahsnyder May 9, 2022
120ad48
Use regular malloc instead of max_alloc for utf16->8 conversion
micahsnyder Jan 8, 2024
c98a7b8
Remove max-allocation limits where not required
micahsnyder Jan 9, 2024
42145e8
Remove duplicate max-alloc checks for lzma and 7z alloc functions
micahsnyder Jan 9, 2024
5255d67
Remove duplicate copy of CLI_STRDUP macro
micahsnyder Jan 9, 2024
6d354ca
Add max-allocation limit to bytecode API's malloc function
micahsnyder Jan 9, 2024
0deced4
Remove unnecessary max-allocation limit checks from bytecode runtime
micahsnyder Jan 9, 2024
4ad8a9a
Remove additional memory allocation limits relating to signature load
micahsnyder Jan 9, 2024
7e53819
Refine max-allocation and safer-allocation function and macro names
micahsnyder Jan 9, 2024
143040c
Fix GitHub code scan issues
micahsnyder Jan 10, 2024
b3c9a56
Clang-format touchup
micahsnyder Jan 10, 2024
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2 changes: 1 addition & 1 deletion clambc/bcrun.c
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Expand Up @@ -399,7 +399,7 @@ int main(int argc, char *argv[])
cctx.evidence = evidence_new();

cctx.recursion_stack_size = cctx.engine->max_recursion_level;
cctx.recursion_stack = cli_calloc(sizeof(recursion_level_t), cctx.recursion_stack_size);
cctx.recursion_stack = calloc(sizeof(recursion_level_t), cctx.recursion_stack_size);
if (!cctx.recursion_stack) {
fprintf(stderr, "Out of memory\n");
exit(3);
Expand Down
2 changes: 1 addition & 1 deletion clamdscan/client.c
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Expand Up @@ -188,7 +188,7 @@ int16_t ping_clamd(const struct optstruct *opts)
/* ping command takes the form --ping [attempts[:interval]] */
if (NULL != (opt = optget(opts, "ping"))) {
if (NULL != opt->strarg) {
if (NULL == (attempt_str = cli_strdup(opt->strarg))) {
if (NULL == (attempt_str = cli_safer_strdup(opt->strarg))) {
logg(LOGG_ERROR, "could not allocate memory for string\n");
ret = -1;
goto done;
Expand Down
2 changes: 1 addition & 1 deletion clamdscan/proto.c
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Expand Up @@ -212,7 +212,7 @@ struct client_parallel_data {
unsigned int id;
const char *file;
struct SCANID *next;
} * ids;
} *ids;
};

/* Sends a proper scan request to clamd and parses its replies
Expand Down
2 changes: 1 addition & 1 deletion clamonacc/clamonacc.c
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Expand Up @@ -291,7 +291,7 @@ static void onas_handle_signals(void)

struct onas_context *onas_init_context(void)
{
struct onas_context *ctx = (struct onas_context *)cli_malloc(sizeof(struct onas_context));
struct onas_context *ctx = (struct onas_context *)malloc(sizeof(struct onas_context));
if (NULL == ctx) {
return NULL;
}
Expand Down
2 changes: 1 addition & 1 deletion clamonacc/client/client.c
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Expand Up @@ -208,7 +208,7 @@ int16_t onas_ping_clamd(struct onas_context **ctx)
opt = optget((*ctx)->opts, "ping");

if (opt->enabled) {
attempt_str = cli_strdup(opt->strarg);
attempt_str = cli_safer_strdup(opt->strarg);
if (attempt_str) {
if (NULL == attempt_str) {
logg(LOGG_ERROR, "could not allocate memory for string\n");
Expand Down
6 changes: 3 additions & 3 deletions clamonacc/fanotif/fanotif.c
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Expand Up @@ -234,7 +234,7 @@ int onas_fan_eloop(struct onas_context **ctx)
if (scan) {
struct onas_scan_event *event_data;

event_data = cli_calloc(1, sizeof(struct onas_scan_event));
event_data = calloc(1, sizeof(struct onas_scan_event));
if (NULL == event_data) {
close(fmd->fd);
logg(LOGG_ERROR, "ClamFanotif: could not allocate memory for event data struct\n");
Expand All @@ -247,15 +247,15 @@ int onas_fan_eloop(struct onas_context **ctx)

/* fanotify specific stuffs */
event_data->bool_opts |= ONAS_SCTH_B_FANOTIFY;
event_data->fmd = cli_malloc(sizeof(struct fanotify_event_metadata));
event_data->fmd = malloc(sizeof(struct fanotify_event_metadata));
if (NULL == event_data->fmd) {
close(fmd->fd);
free(event_data);
logg(LOGG_ERROR, "ClamFanotif: could not allocate memory for event data struct fmd\n");
return 2;
}
memcpy(event_data->fmd, fmd, sizeof(struct fanotify_event_metadata));
event_data->pathname = cli_strdup(fname);
event_data->pathname = cli_safer_strdup(fname);
if (NULL == event_data->pathname) {
close(fmd->fd);
free(event_data->fmd);
Expand Down
14 changes: 7 additions & 7 deletions clamonacc/inotif/hash.c
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Expand Up @@ -136,7 +136,7 @@ int onas_ht_init(struct onas_ht **ht, uint32_t size)

if (size == 0 || (size & (~size + 1)) != size) return CL_EARG;

*ht = (struct onas_ht *)cli_malloc(sizeof(struct onas_ht));
*ht = (struct onas_ht *)malloc(sizeof(struct onas_ht));
if (!(*ht)) return CL_EMEM;

**ht = (struct onas_ht){
Expand All @@ -145,7 +145,7 @@ int onas_ht_init(struct onas_ht **ht, uint32_t size)
.nbckts = 0,
};

if (!((*ht)->htable = (struct onas_bucket **)cli_calloc(size, sizeof(struct onas_bucket *)))) {
if (!((*ht)->htable = (struct onas_bucket **)calloc(size, sizeof(struct onas_bucket *)))) {
onas_free_ht(*ht);
return CL_EMEM;
}
Expand Down Expand Up @@ -180,7 +180,7 @@ void onas_free_ht(struct onas_ht *ht)
static struct onas_bucket *onas_bucket_init()
{

struct onas_bucket *bckt = (struct onas_bucket *)cli_malloc(sizeof(struct onas_bucket));
struct onas_bucket *bckt = (struct onas_bucket *)malloc(sizeof(struct onas_bucket));
if (!bckt) return NULL;

*bckt = (struct onas_bucket){
Expand Down Expand Up @@ -216,7 +216,7 @@ static void onas_free_bucket(struct onas_bucket *bckt)
struct onas_element *onas_element_init(struct onas_hnode *value, const char *key, size_t klen)
{

struct onas_element *elem = (struct onas_element *)cli_malloc(sizeof(struct onas_element));
struct onas_element *elem = (struct onas_element *)malloc(sizeof(struct onas_element));
if (!elem) return NULL;

*elem = (struct onas_element){
Expand Down Expand Up @@ -392,7 +392,7 @@ static int onas_bucket_remove(struct onas_bucket *bckt, struct onas_element *ele
static struct onas_hnode *onas_hashnode_init(void)
{
struct onas_hnode *hnode = NULL;
if (!(hnode = (struct onas_hnode *)cli_malloc(sizeof(struct onas_hnode)))) {
if (!(hnode = (struct onas_hnode *)malloc(sizeof(struct onas_hnode)))) {
return NULL;
}

Expand Down Expand Up @@ -428,7 +428,7 @@ static struct onas_hnode *onas_hashnode_init(void)
static struct onas_lnode *onas_listnode_init(void)
{
struct onas_lnode *lnode = NULL;
if (!(lnode = (struct onas_lnode *)cli_malloc(sizeof(struct onas_lnode)))) {
if (!(lnode = (struct onas_lnode *)malloc(sizeof(struct onas_lnode)))) {
return NULL;
}

Expand Down Expand Up @@ -794,7 +794,7 @@ int onas_ht_rm_hierarchy(struct onas_ht *ht, const char *pathname, size_t len, i
curr = curr->next;

size_t size = len + strlen(curr->dirname) + 2;
char *child_path = (char *)cli_malloc(size);
char *child_path = (char *)malloc(size);
if (child_path == NULL)
return CL_EMEM;
if (hnode->pathname[len - 1] == '/')
Expand Down
14 changes: 7 additions & 7 deletions clamonacc/inotif/inotif.c
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Expand Up @@ -105,7 +105,7 @@ static int onas_ddd_init_wdlt(uint64_t nwatches)

if (nwatches <= 0) return CL_EARG;

wdlt = (char **)cli_calloc(nwatches << 1, sizeof(char *));
wdlt = (char **)calloc(nwatches << 1, sizeof(char *));
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if (!wdlt) return CL_EMEM;

wdlt_len = nwatches << 1;
Expand All @@ -121,7 +121,7 @@ static int onas_ddd_grow_wdlt(void)

char **ptr = NULL;

ptr = (char **)cli_realloc(wdlt, wdlt_len << 1);
ptr = (char **)cli_safer_realloc(wdlt, wdlt_len << 1);
if (ptr) {
wdlt = ptr;
memset(&ptr[wdlt_len], 0, sizeof(char *) * (wdlt_len - 1));
Expand Down Expand Up @@ -243,7 +243,7 @@ static int onas_ddd_watch_hierarchy(const char *pathname, size_t len, int fd, ui
curr = curr->next;

size_t size = len + strlen(curr->dirname) + 2;
char *child_path = (char *)cli_malloc(size);
char *child_path = (char *)malloc(size);
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if (child_path == NULL) {
logg(LOGG_ERROR, "ClamInotif: out of memory when adding child for %s\n", hnode->pathname);
return CL_EMEM;
Expand Down Expand Up @@ -330,7 +330,7 @@ static int onas_ddd_unwatch_hierarchy(const char *pathname, size_t len, int fd,
curr = curr->next;

size_t size = len + strlen(curr->dirname) + 2;
char *child_path = (char *)cli_malloc(size);
char *child_path = (char *)malloc(size);
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if (child_path == NULL)
return CL_EMEM;
if (hnode->pathname[len - 1] == '/')
Expand Down Expand Up @@ -679,7 +679,7 @@ void *onas_ddd_th(void *arg)
} else {
len = strlen(path);
size_t size = strlen(child) + len + 2;
char *child_path = (char *)cli_malloc(size);
char *child_path = (char *)malloc(size);
if (child_path == NULL) {
logg(LOGG_DEBUG, "ClamInotif: could not allocate space for child path ... aborting\n");
return NULL;
Expand Down Expand Up @@ -814,14 +814,14 @@ static void onas_ddd_handle_extra_scanning(struct onas_context *ctx, const char

struct onas_scan_event *event_data;

event_data = (struct onas_scan_event *)cli_calloc(1, sizeof(struct onas_scan_event));
event_data = (struct onas_scan_event *)calloc(1, sizeof(struct onas_scan_event));
if (NULL == event_data) {
logg(LOGG_ERROR, "ClamInotif: could not allocate memory for event data struct\n");
}

/* general mapping */
onas_map_context_info_to_event_data(ctx, &event_data);
event_data->pathname = cli_strdup(pathname);
event_data->pathname = cli_safer_strdup(pathname);
event_data->bool_opts |= ONAS_SCTH_B_SCAN;

/* inotify specific stuffs */
Expand Down
4 changes: 2 additions & 2 deletions clamonacc/misc/utils.c
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Expand Up @@ -159,7 +159,7 @@ char **onas_get_opt_list(const char *fname, int *num_entries, cl_error_t *err)

*num_entries = 0;

opt_list = cli_malloc(sizeof(char *));
opt_list = malloc(sizeof(char *));
if (NULL == opt_list) {
*err = CL_EMEM;
return NULL;
Expand Down Expand Up @@ -206,7 +206,7 @@ char **onas_get_opt_list(const char *fname, int *num_entries, cl_error_t *err)
}

(*num_entries)++;
rlc_ptr = cli_realloc(opt_list, sizeof(char *) * (*num_entries + 1));
rlc_ptr = cli_safer_realloc(opt_list, sizeof(char *) * (*num_entries + 1));
if (rlc_ptr) {
opt_list = rlc_ptr;
opt_list[*num_entries] = NULL;
Expand Down
2 changes: 1 addition & 1 deletion common/scanmem.c
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Expand Up @@ -101,7 +101,7 @@ static inline char *wc2mb(const wchar_t *wc, DWORD flags)
return NULL;
}

mb = cli_malloc(len + 1);
mb = malloc(len + 1);
if (!mb) return NULL;

res = WideCharToMultiByte(CP_ACP, flags, wc, -1, mb, len, NULL, &invalid);
Expand Down
14 changes: 7 additions & 7 deletions freshclam/freshclam.c
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Expand Up @@ -480,7 +480,7 @@ static fc_error_t get_server_node(
* Ensure that URL contains protocol.
*/
if (!strncmp(server, "db.", 3) && strstr(server, ".clamav.net")) {
url = cli_strdup("https://database.clamav.net");
url = cli_safer_strdup("https://database.clamav.net");
if (NULL == url) {
logg(LOGG_ERROR, "get_server_node: Failed to duplicate string for database.clamav.net url.\n");
status = FC_EMEM;
Expand All @@ -497,7 +497,7 @@ static fc_error_t get_server_node(
snprintf(url, urlLen + 1, "%s://%s", defaultProtocol, server);
} else {
urlLen = strlen(server);
url = cli_strdup(server);
url = cli_safer_strdup(server);
if (NULL == url) {
logg(LOGG_ERROR, "get_server_node: Failed to duplicate string for server url.\n");
status = FC_EMEM;
Expand Down Expand Up @@ -535,7 +535,7 @@ static fc_error_t string_list_add(const char *item, char ***stringList, uint32_t
}

nItems = *nListItems + 1;
newList = (char **)cli_realloc(*stringList, nItems * sizeof(char *));
newList = (char **)cli_safer_realloc(*stringList, nItems * sizeof(char *));
if (newList == NULL) {
mprintf(LOGG_ERROR, "string_list_add: Failed to allocate memory for optional database list entry.\n");
status = FC_EMEM;
Expand All @@ -544,7 +544,7 @@ static fc_error_t string_list_add(const char *item, char ***stringList, uint32_t

*stringList = newList;

newList[nItems - 1] = cli_strdup(item);
newList[nItems - 1] = cli_safer_strdup(item);
if (newList[nItems - 1] == NULL) {
mprintf(LOGG_ERROR, "string_list_add: Failed to allocate memory for optional database list item.\n");
status = FC_EMEM;
Expand Down Expand Up @@ -1142,7 +1142,7 @@ fc_error_t select_from_official_databases(
goto done;
}

selectedDatabases = cli_calloc(nStandardDatabases + nOptionalDatabases, sizeof(char *));
selectedDatabases = calloc(nStandardDatabases + nOptionalDatabases, sizeof(char *));

/*
* Select desired standard databases.
Expand Down Expand Up @@ -1261,7 +1261,7 @@ fc_error_t select_specific_databases(
*databaseList = NULL;
*nDatabases = 0;

selectedDatabases = cli_calloc(nSpecificDatabases, sizeof(char *));
selectedDatabases = calloc(nSpecificDatabases, sizeof(char *));

/*
* Get lists of available databases.
Expand Down Expand Up @@ -1663,7 +1663,7 @@ int main(int argc, char **argv)
/*
* Parse the config file.
*/
cfgfile = cli_strdup(optget(opts, "config-file")->strarg);
cfgfile = cli_safer_strdup(optget(opts, "config-file")->strarg);
if ((opts = optparse(cfgfile, 0, NULL, 1, OPT_FRESHCLAM, 0, opts)) == NULL) {
fprintf(stderr, "ERROR: Can't open/parse the config file %s\n", cfgfile);
status = FC_EINIT;
Expand Down
2 changes: 1 addition & 1 deletion libclamav/7z_iface.c
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Expand Up @@ -144,7 +144,7 @@ int cli_7unz(cli_ctx *ctx, size_t offset)
if (newnamelen > namelen) {
if (namelen > UTFBUFSZ)
free(utf16name);
utf16name = cli_malloc(newnamelen * 2);
utf16name = cli_max_malloc(newnamelen * 2);
if (!utf16name) {
found = CL_EMEM;
break;
Expand Down
2 changes: 1 addition & 1 deletion libclamav/apm.c
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Expand Up @@ -37,7 +37,7 @@
#include "scanners.h"
#include "dconf.h"

//#define DEBUG_APM_PARSE
// #define DEBUG_APM_PARSE

#ifdef DEBUG_APM_PARSE
#define apm_parsemsg(...) cli_dbgmsg(__VA_ARGS__)
Expand Down
6 changes: 3 additions & 3 deletions libclamav/aspack.c
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Expand Up @@ -399,7 +399,7 @@ int unaspack(uint8_t *image, unsigned int size, struct cli_exe_section *sections

blocks = image + ep + blocks_offset;

if (!(wrkbuf = cli_calloc(0x1800, sizeof(uint8_t)))) {
if (!(wrkbuf = calloc(0x1800, sizeof(uint8_t)))) {
cli_dbgmsg("Aspack: Unable to allocate dictionary\n");
return 0;
}
Expand All @@ -426,7 +426,7 @@ int unaspack(uint8_t *image, unsigned int size, struct cli_exe_section *sections
while (CLI_ISCONTAINED(image, size, blocks, 8) && (block_rva = cli_readint32(blocks)) && (block_size = cli_readint32(blocks + 4)) && CLI_ISCONTAINED(image, size, image + block_rva, block_size)) {

cli_dbgmsg("Aspack: unpacking block rva:%x - sz:%x\n", block_rva, block_size);
wrkbuf = (uint8_t *)cli_calloc(block_size + 0x10e, sizeof(uint8_t));
wrkbuf = (uint8_t *)cli_max_calloc(block_size + 0x10e, sizeof(uint8_t));

if (!wrkbuf) {
cli_dbgmsg("Aspack: Null work buff\n");
Expand Down Expand Up @@ -484,7 +484,7 @@ int unaspack(uint8_t *image, unsigned int size, struct cli_exe_section *sections
if (sectcount > 2 && ep == sections[sectcount - 2].rva && !sections[sectcount - 1].rsz) {
sectcount -= 2;
}
if (!(outsects = cli_malloc(sizeof(struct cli_exe_section) * sectcount))) {
if (!(outsects = cli_max_malloc(sizeof(struct cli_exe_section) * sectcount))) {
cli_dbgmsg("Aspack: OOM - rebuild failed\n");
cli_writen(f, image, size);
return 1; /* No whatsoheader - won't infloop in pe.c */
Expand Down
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