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Makes the INFO DTMF parser more tolerant about spaces

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François Grisez 2017-11-03 10:50:29 +01:00
parent 373391366c
commit e535326174
1 changed files with 26 additions and 34 deletions
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60
coreapi/sal.c
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@ -878,47 +878,39 @@ const char* sal_privacy_to_string(SalPrivacy privacy) {
}
}
static void remove_trailing_spaces(char *line) {
size_t size = strlen(line);
char *end = line + size - 1;
while (end >= line && isspace(*end)) {
end--;
}
*(end + 1) = '\0';
}
static int line_get_value(const char *input, const char *key, char *value, size_t value_size, size_t *read){
const char *end=strchr(input,'\n');
char line[256]={0};
char key_candidate[256];
static int line_get_value(const char *input, const char *key, char *value, size_t value_size, size_t *read) {
const char *end = strchr(input, '\n');
char line[256] = {0};
char key_candidate[256]; // key_candidate array must have the same size of line array to avoid potential invalid writes
char *equal;
size_t len;
if (!end) len=strlen(input);
else len=end +1 -input;
*read=len;
strncpy(line,input,MIN(len,sizeof(line)));
equal=strchr(line,'=');
if (!end) len = strlen(input);
else len = end + 1 - input;
*read = len;
strncpy(line, input, MIN(len, sizeof(line)));
equal = strchr(line, '=');
if (!equal) return FALSE;
*equal='\0';
if (sscanf(line,"%s",key_candidate)!=1) return FALSE;
if (strcasecmp(key,key_candidate)==0){
equal++;
remove_trailing_spaces(equal);
strncpy(value,equal,value_size-1);
value[value_size-1]='\0';
return TRUE;
}
return FALSE;
*equal = '\0';
if (sscanf(line, "%s", key_candidate) != 1) return FALSE;
if (strcasecmp(key, key_candidate) != 0) return FALSE;
equal++;
if (strlen(equal) >= value_size) equal[value_size - 1] = '\0';
if (sscanf(equal, "%s", value) != 1) return FALSE;
return TRUE;
}
int sal_lines_get_value(const char *data, const char *key, char *value, size_t value_size){
size_t read=0;
int sal_lines_get_value(const char *data, const char *key, char *value, size_t value_size) {
size_t read = 0;
do{
if (line_get_value(data,key,value,value_size,&read))
do {
if (line_get_value(data, key, value, value_size, &read))
return TRUE;
data+=read;
}while(read!=0);
data += read;
} while (read != 0);
return FALSE;
}