--- /dev/null
+/*
+ * This is a quick and dirty HTTP server that uses PhysicsFS to retrieve
+ * files. It is not robust at all, probably buggy, and definitely poorly
+ * designed. It's just meant to show that it can be done.
+ *
+ * Basically, you compile this code, and run it:
+ * ./physfshttpd archive1.zip archive2.zip /path/to/a/real/dir etc...
+ *
+ * The files are appended in order to the PhysicsFS search path, and when
+ * a client request comes it, it looks for the file in said search path.
+ *
+ * My goal was to make this work in less than 300 lines of C, so again, it's
+ * not to be used for any serious purpose. Patches to make this application
+ * suck less will be readily and gratefully accepted.
+ *
+ * Command line I used to build this on Linux:
+ * gcc -Wall -Werror -g -o bin/physfshttpd extras/physfshttpd.c -lphysfs
+ *
+ * License: this code is public domain. I make no warranty that it is useful,
+ * correct, harmless, or environmentally safe.
+ *
+ * This particular file may be used however you like, including copying it
+ * verbatim into a closed-source project, exploiting it commercially, and
+ * removing any trace of my name from the source (although I hope you won't
+ * do that). I welcome enhancements and corrections to this file, but I do
+ * not require you to send me patches if you make changes. This code has
+ * NO WARRANTY.
+ *
+ * Unless otherwise stated, the rest of PhysicsFS falls under the zlib license.
+ * Please see LICENSE.txt in the root of the source tree.
+ *
+ * This file was written by Ryan C. Gordon. (icculus@icculus.org).
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#ifndef LACKING_SIGNALS
+#include <signal.h>
+#endif
+
+#ifndef LACKING_PROTOENT
+#include <netdb.h>
+#endif
+
+#include "physfs.h"
+
+
+#define DEFAULT_PORTNUM 6667
+
+typedef struct
+{
+ int sock;
+ struct sockaddr *addr;
+ socklen_t addrlen;
+} http_args;
+
+
+static char *txt404 =
+"HTTP/1.0 404 Not Found\n"
+"Connection: close\n"
+"Content-Type: text/html; charset=utf-8\n"
+"\n"
+"<html><head><title>404 Not Found</title></head>\n"
+"<body>Can't find that.</body></html>\n\n";
+
+
+static void feed_file_http(const char *ipstr, int sock, const char *fname)
+{
+ PHYSFS_File *in = PHYSFS_openRead(fname);
+ char buffer[1024];
+ printf("%s: requested [%s].\n", ipstr, fname);
+ if (in == NULL)
+ {
+ printf("%s: Can't open [%s]: %s.\n",
+ ipstr, fname, PHYSFS_getLastError());
+ write(sock, txt404, strlen(txt404)); /* !!! FIXME: Check retval */
+ } /* if */
+ else
+ {
+ do
+ {
+ PHYSFS_sint64 br = PHYSFS_read(in, buffer, 1, sizeof (buffer));
+ if (br == -1)
+ {
+ printf("%s: Read error: %s.\n", ipstr, PHYSFS_getLastError());
+ break;
+ } /* if */
+
+ write(sock, buffer, (int) br); /* !!! FIXME: CHECK THIS RETVAL! */
+ } while (!PHYSFS_eof(in));
+
+ PHYSFS_close(in);
+ } /* else */
+} /* feed_file_http */
+
+
+static void *do_http(void *_args)
+{
+ http_args *args = (http_args *) _args;
+ char ipstr[128];
+ char buffer[512];
+ char *ptr;
+ strncpy(ipstr, inet_ntoa(((struct sockaddr_in *) args->addr)->sin_addr),
+ sizeof (ipstr));
+ ipstr[sizeof (ipstr) - 1] = '\0';
+
+ printf("%s: connected.\n", ipstr);
+ read(args->sock, buffer, sizeof (buffer));
+ buffer[sizeof (buffer) - 1] = '\0';
+ ptr = strchr(buffer, '\n');
+ if (!ptr)
+ printf("%s: potentially bogus request.\n", ipstr);
+ else
+ {
+ *ptr = '\0';
+ ptr = strchr(buffer, '\r');
+ if (ptr != NULL)
+ *ptr = '\0';
+
+ if ((toupper(buffer[0]) == 'G') &&
+ (toupper(buffer[1]) == 'E') &&
+ (toupper(buffer[2]) == 'T') &&
+ (toupper(buffer[3]) == ' ') &&
+ (toupper(buffer[4]) == '/'))
+ {
+ ptr = strchr(buffer + 5, ' ');
+ if (ptr != NULL)
+ *ptr = '\0';
+ feed_file_http(ipstr, args->sock, buffer + 4);
+ } /* if */
+ } /* else */
+
+ /* !!! FIXME: Time the transfer. */
+ printf("%s: closing connection.\n", ipstr);
+ close(args->sock);
+ free(args->addr);
+ free(args);
+ return(NULL);
+} /* do_http */
+
+
+static void serve_http_request(int sock, struct sockaddr *addr,
+ socklen_t addrlen)
+{
+ http_args *args = (http_args *) malloc(sizeof (http_args));
+ if (args == NULL)
+ {
+ printf("out of memory.\n");
+ return;
+ } /* if */
+ args->addr = (struct sockaddr *) malloc(addrlen);
+ if (args->addr == NULL)
+ {
+ free(args);
+ printf("out of memory.\n");
+ return;
+ } /* if */
+
+ args->sock = sock;
+ args->addrlen = addrlen;
+ memcpy(args->addr, addr, addrlen);
+
+ /* !!! FIXME: optionally spin a thread... */
+ do_http((void *) args);
+} /* server_http_request */
+
+
+static int create_listen_socket(short portnum)
+{
+ int retval = -1;
+ int protocol = 0; /* pray this is right. */
+
+#ifndef LACKING_PROTOENT
+ struct protoent *prot;
+ setprotoent(0);
+ prot = getprotobyname("tcp");
+ if (prot != NULL)
+ protocol = prot->p_proto;
+#endif
+
+ retval = socket(PF_INET, SOCK_STREAM, protocol);
+ if (retval >= 0)
+ {
+ struct sockaddr_in addr;
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(portnum);
+ addr.sin_addr.s_addr = INADDR_ANY;
+ if ((bind(retval, &addr, (socklen_t) sizeof (addr)) == -1) ||
+ (listen(retval, 5) == -1))
+ {
+ close(retval);
+ retval = -1;
+ } /* if */
+ } /* if */
+
+ return(retval);
+} /* create_listen_socket */
+
+
+static int listensocket = -1;
+
+void at_exit_cleanup(void)
+{
+ /*
+ * !!! FIXME: If thread support, signal threads to terminate and
+ * !!! FIXME: wait for them to clean up.
+ */
+
+ if (listensocket >= 0)
+ close(listensocket);
+
+ if (!PHYSFS_deinit())
+ printf("PHYSFS_deinit() failed: %s\n", PHYSFS_getLastError());
+} /* at_exit_cleanup */
+
+
+int main(int argc, char **argv)
+{
+ int i;
+ int portnum = DEFAULT_PORTNUM;
+
+ setbuf(stdout, NULL);
+ setbuf(stderr, NULL);
+
+#ifndef LACKING_SIGNALS
+ /* I'm not sure if this qualifies as a cheap trick... */
+ signal(SIGTERM, exit);
+ signal(SIGINT, exit);
+ signal(SIGFPE, exit);
+ signal(SIGSEGV, exit);
+ signal(SIGPIPE, exit);
+ signal(SIGILL, exit);
+#endif
+
+ if (argc == 1)
+ {
+ printf("USAGE: %s <archive1> [archive2 [... archiveN]]\n", argv[0]);
+ return(42);
+ } /* if */
+
+ if (!PHYSFS_init(argv[0]))
+ {
+ printf("PHYSFS_init() failed: %s\n", PHYSFS_getLastError());
+ return(42);
+ } /* if */
+
+ /* normally, this is bad practice, but oh well. */
+ atexit(at_exit_cleanup);
+
+ for (i = 1; i < argc; i++)
+ {
+ if (!PHYSFS_addToSearchPath(argv[i], 1))
+ printf(" WARNING: failed to add [%s] to search path.\n", argv[i]);
+ } /* else */
+
+ listensocket = create_listen_socket(portnum);
+ if (listensocket < 0)
+ {
+ printf("listen socket failed to create.\n");
+ return(42);
+ } /* if */
+
+ while (1) /* infinite loop for now. */
+ {
+ struct sockaddr addr;
+ socklen_t len;
+ int s = accept(listensocket, &addr, &len);
+ if (s < 0)
+ {
+ printf("accept() failed: %s\n", strerror(errno));
+ close(listensocket);
+ return(42);
+ } /* if */
+
+ serve_http_request(s, &addr, len);
+ } /* while */
+
+ return(0);
+} /* main */
+
+/* end of physfshttpd.c ... */
+
projects / physicsfs / blobdiff