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Fixed Coverity errors that were in harness_common.c

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This commit is contained in:
Markus Makela
2014-11-04 11:37:26 +02:00
parent 99707853be
commit 1b9da8662d
1 changed files with 92 additions and 63 deletions
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149
server/modules/filter/test/harness_common.c
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@ -267,83 +267,104 @@ int clientReply(void* ins, void* session, GWBUF* queue)
return 1;
}
/**
* Read a string from a file descriptor to a block of memory
* @param fd File descriptor to read from, assumed to be open
* @param buff Buffer to write to
* @param size Size of the buffer
* @return Number of bytes read
*/
int fdgets(int fd, char* buff, int size)
{
int i = 0;
while(i < size - 1 && read(fd,&buff[i],1))
{
if(buff[i] == '\n' || buff[i] == '\0')
{
break;
}
i++;
}
buff[i] = '\0';
return i;
}
/**
* Loads a query from a file
*@return 0 if successful, 1 if an error occurred
*/
int load_query()
{
char** query_list;
char* buff;
char rc;
int i, qcount = 0, qbuff_sz = 10, buff_sz = 2048;
char buffer[4092];
int i, qcount = 0, qbuff_sz = 10;
int offset = 0;
unsigned int qlen = 0;
if((buff = calloc(buff_sz,sizeof(char))) == NULL ||
(query_list = calloc(qbuff_sz,sizeof(char*))) == NULL){
if((query_list = calloc(qbuff_sz,sizeof(char*))) == NULL){
printf("Error: cannot allocate enough memory.\n");
skygw_log_write(LOGFILE_ERROR,"Error: cannot allocate enough memory.\n");
return 1;
}
while(read(instance.infile,&rc,1)){
while((offset = fdgets(instance.infile,buffer,4092))){
if(rc != '\n' && rc != '\0'){
if(offset >= buff_sz){
char* tmp = malloc(sizeof(char)*2*buff_sz);
if(tmp){
memcpy(tmp,buff,buff_sz);
free(buff);
buff = tmp;
buff_sz *= 2;
}else{
printf("Error: cannot allocate enough memory.\n");
skygw_log_write(LOGFILE_ERROR,"Error: cannot allocate enough memory.\n");
free(buff);
return 1;
}
}
buff[offset++] = rc;
}else{
if(qcount >= qbuff_sz){
char** tmpcl = malloc(sizeof(char*) * (qcount * 2 + 1));
if(!tmpcl){
printf("Error: cannot allocate enough memory.\n");
skygw_log_write(LOGFILE_ERROR,"Error: cannot allocate enough memory.\n");
return 1;
}
for(i = 0;i < qbuff_sz;i++){
tmpcl[i] = query_list[i];
if(qbuff_sz <= qcount){
char** tmpbuff = realloc(query_list,sizeof(char*)*qbuff_sz*2);
if(tmpbuff == NULL){
printf("Error: cannot allocate enough memory.\n");
skygw_log_write(LOGFILE_ERROR,"Error: cannot allocate enough memory.\n");
for(i = 0;i<qcount;i++){
free(query_list[i]);
}
free(query_list);
query_list = tmpcl;
qbuff_sz = qcount * 2 + 1;
return 1;
}
query_list[qcount] = malloc(sizeof(char)*(offset + 1));
memcpy(query_list[qcount],buff,offset);
query_list[qcount][offset] = '\0';
offset = 0;
qcount++;
query_list = tmpbuff;
qbuff_sz *= 2;
}
query_list[qcount] = calloc((offset + 1),sizeof(char));
strcpy(query_list[qcount],buffer);
offset = 0;
qcount++;
}
/**TODO check what messes up the first querystring*/
GWBUF** tmpbff = malloc(sizeof(GWBUF*)*(qcount + 1));
if(tmpbff){
for(i = 0;i<qcount;i++){
tmpbff[i] = gwbuf_alloc(strnlen(query_list[i],buff_sz) + 6);
gwbuf_set_type(tmpbff[i],GWBUF_TYPE_MYSQL);
memcpy(tmpbff[i]->sbuf->data + 5,query_list[i],strnlen(query_list[i],buff_sz));
tmpbff[i] = gwbuf_alloc(strlen(query_list[i]) + 6);
qlen = strnlen(query_list[i],buff_sz);
if(tmpbff[i] == NULL)
{
printf("Error: cannot allocate a new buffer.\n");
skygw_log_write(LOGFILE_ERROR,"Error: cannot allocate a new buffer.\n");
int x;
for(x = 0;x<i;x++)
{
gwbuf_free(tmpbff[x]);
}
for(x = 0;x<qcount;x++)
{
free(query_list[x]);
}
free(tmpbff);
free(query_list);
return 1;
}
gwbuf_set_type(tmpbff[i],GWBUF_TYPE_MYSQL);
strcpy((char*)(tmpbff[i]->start + 5),query_list[i]);
qlen = strlen(query_list[i]) + 1;
tmpbff[i]->sbuf->data[0] = qlen;
tmpbff[i]->sbuf->data[1] = (qlen << 8);
tmpbff[i]->sbuf->data[2] = (qlen << 16);
@ -359,11 +380,17 @@ int load_query()
free_buffers();
return 1;
}
if(qcount < 1){
return 1;
}
instance.buffer_count = qcount;
for(i = 0;i<qcount;i++)
{
free(query_list[i]);
}
free(query_list);
return 0;
}
@ -572,7 +599,7 @@ int load_config( char* fname)
int load_filter(FILTERCHAIN* fc, CONFIG* cnf)
{
FILTER_PARAMETER** fparams;
FILTER_PARAMETER** fparams = NULL;
int i, paramc = -1;
if(cnf == NULL){
@ -640,7 +667,7 @@ int load_filter(FILTERCHAIN* fc, CONFIG* cnf)
int sess_err = 0;
if(fc && fc->instance){
if(cnf && fc && fc->instance){
fc->filter = (FILTER*)fc->instance->createInstance(NULL,fparams);
@ -713,15 +740,14 @@ int load_filter(FILTERCHAIN* fc, CONFIG* cnf)
}
if(cnf){
int x;
for(x = 0;x<paramc;x++){
free(fparams[x]->name);
free(fparams[x]->value);
}
free(fparams);
int x;
for(x = 0;x<paramc;x++){
free(fparams[x]->name);
free(fparams[x]->value);
}
free(fparams);
return sess_err ? 0 : 1;
}
@ -893,7 +919,7 @@ GWBUF* gen_packet(PACKET pkt)
int process_opts(int argc, char** argv)
{
int fd = open_file("harness.cnf",1), buffsize = 1024;
int rd,fsize;
int rd,fsize,rdsz;
char *buff = calloc(buffsize,sizeof(char)), *tok = NULL;
/**Parse 'harness.cnf' file*/
@ -901,7 +927,8 @@ int process_opts(int argc, char** argv)
lseek(fd,0,SEEK_SET);
instance.thrcount = 1;
instance.session_count = 1;
read(fd,buff,fsize);
rdsz = read(fd,buff,fsize);
buff[rdsz] = '\0';
tok = strtok(buff,"=");
while(tok){
if(!strcmp(tok,"threads")){
@ -992,6 +1019,8 @@ int process_opts(int argc, char** argv)
}else{
instance.running = 0;
}
free(conf_name);
close(fd);
return 0;
}