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-rw-r--r--P3/Makefile2
-rw-r--r--P3/server.c94
2 files changed, 52 insertions, 44 deletions
diff --git a/P3/Makefile b/P3/Makefile
index 921a089..d109601 100644
--- a/P3/Makefile
+++ b/P3/Makefile
@@ -3,7 +3,7 @@ CFLAGS = -D_REENTRANT
LDFLAGS = -lpthread -pthread
web_server: server.c
- ${CC} -Wall -o web_server server.c util.o ${LDFLAGS}
+ ${CC} -Wall -g -o web_server server.c util.o ${LDFLAGS}
clean:
rm web_server webserver_log
diff --git a/P3/server.c b/P3/server.c
index 4e0b965..d6bfe43 100644
--- a/P3/server.c
+++ b/P3/server.c
@@ -106,16 +106,33 @@ char* getContentType(char * mybuf) {
}
}
+// Function to get the size of the file in the queue
+// (Thanks Matt from stackOverflow)
+unsigned long getFileSize(char *file) {
+ char* temp = malloc(BUFF_SIZE);
+ sprintf(temp, ".%s", file);
+ FILE *f = fopen(temp, "r");
+ fseek(f, 0, SEEK_END);
+ unsigned long len = (unsigned long)ftell(f);
+ fclose(f);
+ free(temp);
+ return len;
+}
+
// Function to open and read the file from the disk into the memory
// Add necessary arguments as needed
int readFromDisk(char* fileName, char* buffer, long fileSize) {
+ char* temp = malloc(BUFF_SIZE);
+ sprintf(temp, ".%s", fileName);
// Open and read the contents of file given the request
- FILE* requestFile = fopen(fileName, "r");
- if (requestFile == NULL) {
+ int requestFile = open(temp, O_RDONLY);
+ if (requestFile == -1) {
return -1; // Error handle
}
- fgets(buffer, fileSize, requestFile);
- fclose(requestFile);
+
+ read(requestFile, buffer, fileSize);
+ close(requestFile);
+ free(temp);
return 0;
}
@@ -128,24 +145,25 @@ void * dispatch(void *arg) {
// Accept client connection and get the fd
int newReq = accept_connection();
if (newReq > INVALID) {
- //Make traversal Queue????
request_t* traverse = Q;
+
// Get request from the client
// Add the request into the queue
for(int i = 0; i < qLen; i++) {
if (traverse == NULL) {
+
//Add things to queue. Lock & unlock to prevent a deadlock
pthread_mutex_lock(&Qlock);
- request_t * tempNode = (request_t*) calloc(1, sizeof(request_t *)); // Yes, he spelled it like that on purpose
+ request_t * tempNode = (request_t*) calloc(1, sizeof(request_t *));
char* dispatchBuf = (char *) malloc(BUFF_SIZE); // Buffer to store the requested filename
pthread_mutex_unlock(&Qlock);
if (get_request(newReq, dispatchBuf) != 0)
continue; // If get_request fails, try again
- //Hopefully this works. Please work. Please.
tempNode->fd = newReq;
tempNode->request = dispatchBuf;
+ Q = tempNode;
break;
} else {
traverse = traverse -> next;
@@ -160,44 +178,44 @@ void * dispatch(void *arg) {
// Function to retrieve the request from the queue, process it and then return a result to the client
void * worker(void *arg) {
- //TODO: Fix this (gcc does not like this case as void* and int are different sizes)
int id = *(int*) arg;
- long numbytes;
+ unsigned long numbytes;
unsigned long long numReqs = 0;
while (1) {
- // Get the request from the queue
+
+ // Get the request from the queue
pthread_mutex_lock(&Qlock);
- if (Q == NULL)
+ if (Q == NULL) {
+ pthread_mutex_unlock(&Qlock);
continue;
+ }
+
//Make copy of request and get rid of old one.
- request_t *request = NULL;
+ request_t *request = malloc(sizeof(request_t));
request->fd = Q->fd;
request->request = Q->request;
Q = Q->next;
pthread_mutex_unlock(&Qlock);
- // Get the data from the disk or the cache (extra credit B)
+ // TODO! Get the data from the disk or the cache (extra credit B)
- // Log the request into the file and terminal
+ // Log the request into the file and terminal
pthread_mutex_lock(&logLock);
FILE* log = fopen("../webserver_log", "a");
- fprintf(log, "[%d][%lld][%d][%s][%s][%s]", id, ++numReqs, request->fd, "Request String", "Bytes/Error", "CACHE");
- fprintf(stdout, "[%d][%lld][%d][%s][%s][%s]", id, ++numReqs, request->fd, "Request String", "Bytes/Error", "CACHE");
+ fprintf(log, "[%d][%lld][%d][%s][%s][%s]\n", id, ++numReqs, request->fd, request->request, "Bytes/Error", "CACHE");
+ printf("[%d][%lld][%d][%s][%s][%s]\n", id, numReqs, request->fd, request->request, "Bytes/Error", "CACHE");
fclose(log);
pthread_mutex_unlock(&logLock);
- // return the result
- //TODO! Fix this holy shit
- // call readFromDisk and read that shit into workerBuf and then call
- struct stat *oob = NULL;
- fstat(request->fd, oob);
- numbytes = oob->st_size;
+
+ // Return the result
+ numbytes = getFileSize(request->request);
char *workerBuf = (char *) calloc(numbytes, sizeof(char));
if (readFromDisk(request->request, workerBuf, numbytes) != 0) {
return_error(request->fd, request->request);
} else {
- //use fstat's stat_st to get numbytes?
-
return_result(request->fd, getContentType(request->request), workerBuf, numbytes);
}
+ free(request);
+ free(workerBuf);
}
return NULL;
}
@@ -212,7 +230,6 @@ static void eggs(int signo) {
exitFlag |= 1;
}
int main(int argc, char **argv) {
-printf("I AM THE FIRST DEBUGGING STATEMENT\n");
// Error check on number of arguments
if(argc != 8){
printf("usage: %s port path num_dispatcher num_workers dynamic_flag queue_length cache_size\n", argv[0]);
@@ -221,25 +238,19 @@ printf("I AM THE FIRST DEBUGGING STATEMENT\n");
// Get the input args
//Port
port = atoi(argv[1]);
- printf("I AM A DEBUGGING STATEMENT 1\n");
//Webroot path
path = argv[2];
- printf("I AM A DEBUGGING STATEMENT 2\n");
//(static) number of dispatchers
dispatchers = atoi(argv[3]);
- printf("I AM A DEBUGGING STATEMENT 3\n");
//(static) number of workers
workers = atoi(argv[4]);
- printf("I AM A DEBUGGING STATEMENT 4\n");
//Dynamic worker flag
dynFlag = atoi(argv[5]);
- printf("I AM A DEBUGGING STATEMENT 5\n");
//Queue Length
qLen = atoi(argv[6]);
- printf("I AM A DEBUGGING STATEMENT 6\n");
//Max cache size
cSiz = atoi(argv[7]);
- printf("I AM A DEBUGGING STATEMENT 7\n");
+
/* -- ERROR CHECKING -- */
if (port < 1025 || port > 65535) {
printf("Invalid port. Port must be greater than 1024 or less than 65536.\n");
@@ -260,7 +271,6 @@ printf("I AM THE FIRST DEBUGGING STATEMENT\n");
/* -- END ERROR CHECKING -- */
// Change SIGINT action for graceful termination
- printf("I AM A DEBUGGING STATEMENT\n");
struct sigaction act;
act.sa_handler = eggs;
act.sa_flags = 0;
@@ -269,7 +279,7 @@ printf("I AM THE FIRST DEBUGGING STATEMENT\n");
perror("SIGINT Handler Error");
return -2;
}
- // Open log file to make it exist
+ // Create instance of logfil
FILE* logfile = fopen("webserver_log", "w");
fclose(logfile);
@@ -288,7 +298,6 @@ printf("I AM THE FIRST DEBUGGING STATEMENT\n");
exit(-2);
}
}
- printf("I AM A DEBUGGING STATEMENT\n");
//Make sure threads are all detached
pthread_attr_t attr;
pthread_attr_init(&attr);
@@ -318,21 +327,20 @@ printf("I AM THE FIRST DEBUGGING STATEMENT\n");
//Server loop (RUNS FOREVER)
while (1) {
//TODO: Add something else?
- int i = 0;
// Terminate server gracefully
if (exitFlag){
printf("\nSIGINT caught, exiting now.\n");
// Print the number of pending requests in the request queue
- /*TODO*/
- // close log file
- if (fclose(logfile) != 0) {
- perror("fclose error");
- return -6;
+ int pendReqs;
+ for (pendReqs = 0; pendReqs < qLen; pendReqs++) {
+ if (Q == NULL || Q->next == NULL)
+ break;
}
+ printf("There are %d pending requests left in the queue.\n", pendReqs);
// Remove cache (extra credit B)
//if (cSiz != 0)
- //free(dynQ);
- printf("Cache has successfully been cleared.\nExiting now.\n");
+ //free(dynQ);
+ //printf("Cache has successfully been cleared.\nExiting now.\n");
return 0;
}
}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-22 09:26:48 +0000