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Fix config file parsing

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Lorenz Stechauner
2021-12-27 17:17:17 +01:00
parent 2a3f74e825
commit 4a002d6c31
1 changed files with 23 additions and 6 deletions
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29
src/lib/config.c
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@@ -77,16 +77,28 @@ int config_load(const char *filename) {
int i = 0;
int j = 0;
int line = 0;
int mode = 0;
char section = 0;
char *ptr = NULL;
char *source, *target;
while ((ptr = strtok(ptr == NULL ? conf : NULL, "\n")) != NULL) {
while ((ptr = strsep(&conf, "\r\n")) != NULL) {
line++;
char *comment = strchr(ptr, '#');
if (comment != NULL) comment[0] = 0;
len = strlen(ptr);
char *end_ptr = ptr + len - 1;
while (end_ptr[0] == ' ' || end_ptr[0] == '\t') {
end_ptr[0] = 0;
end_ptr--;
}
len = strlen(ptr);
if (len == 0) continue;
if (ptr[0] == '[') {
if (ptr[len - 1] != ']') goto err;
ptr++;
int l = 0;
if (strncmp(ptr, "host", 4) == 0 && (ptr[4] == ' ' || ptr[4] == '\t')) {
ptr += 4;
@@ -115,6 +127,8 @@ int config_load(const char *filename) {
} else if (len > 11 && strncmp(ptr, "dns_server", 10) == 0 && (ptr[10] == ' ' || ptr[10] == '\t')) {
source = ptr + 10;
target = dns_server;
} else {
goto err;
}
} else if (section == 'c') {
cert_config *cc = &tmp_config->certs[j - 1];
@@ -124,6 +138,8 @@ int config_load(const char *filename) {
} else if (len > 12 && strncmp(ptr, "private_key", 11) == 0 && (ptr[11] == ' ' || ptr[11] == '\t')) {
source = ptr + 11;
target = cc->priv_key;
} else {
goto err;
}
} else if (section == 'h') {
host_config *hc = &tmp_config->hosts[i - 1];
@@ -180,21 +196,22 @@ int config_load(const char *filename) {
hc->rev_proxy.enc = 1;
}
continue;
} else {
goto err;
}
} else {
goto err;
}
char *end_ptr = source + strlen(source) - 1;
while (source[0] == ' ' || source[0] == '\t') source++;
while (end_ptr[0] == ' ' || end_ptr[0] == '\t') end_ptr--;
if (end_ptr <= source) {
if (strlen(source) == 0) {
err:
free(conf);
free(tmp_config);
fprintf(stderr, ERR_STR "Unable to parse config file" CLR_STR "\n");
fprintf(stderr, ERR_STR "Unable to parse config file (line %i)" CLR_STR "\n", line);
return -2;
}
end_ptr[1] = 0;
if (target != NULL) {
strcpy(target, source);
} else if (mode == 1) {