Add the --files option, to list individual files in the various

[sgt/agedu] / httpd.c

diff --git a/httpd.c b/httpd.c
index a11d6e7..62c1ceb 100644 (file)
--- a/httpd.c
+++ b/httpd.c
@@ -2,26 +2,8 @@
  * httpd.c: implementation of httpd.h.
  */
 
-#define _GNU_SOURCE
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-#include <unistd.h>
-#include <pwd.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <fcntl.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#include <netinet/in.h>
-#include <syslog.h>
-
 #include "agedu.h"
-#include "malloc.h"
+#include "alloc.h"
 #include "html.h"
 #include "httpd.h"
 
@@ -278,25 +260,31 @@ char *got_data(struct connctx *ctx, char *data, int length,
        }
 
        if (!magic_access && !auth_correct) {
-           if (auth_string && !auth_provided) {
+           if (auth_string) {
                ret = http_error("401", "Unauthorized",
-                                "WWW-Authenticate: Basic realm=\""PNAME"\"\r",
-                                "\nPlease authenticate to view these pages.");
+                                "WWW-Authenticate: Basic realm=\""PNAME"\"\r\n",
+                                "\nYou must authenticate to view these pages.");
            } else {
                ret = http_error("403", "Forbidden", NULL,
                                 "This is a restricted-access set of pages.");
            }
        } else {
+           char *q;
            p = ctx->url;
            p += strspn(p, "/?");
-           index = strtoul(p, NULL, 10);
-           document = html_query(ctx->t, index, cfg);
-           if (document) {
-               ret = http_success("text/html", 1, document);
-               sfree(document);
-           } else {
+           index = strtoul(p, &q, 10);
+           if (*q) {
                ret = http_error("404", "Not Found", NULL,
-                                "Pathname index out of range.");
+                                "This is not a valid pathname index.");
+           } else {
+               document = html_query(ctx->t, index, cfg);
+               if (document) {
+                   ret = http_success("text/html", 1, document);
+                   sfree(document);
+               } else {
+                   ret = http_error("404", "Not Found", NULL,
+                                    "Pathname index out of range.");
+               }
            }
        }
        return ret;
@@ -380,9 +368,11 @@ int check_owning_uid(int fd, int flip)
        while (fgets(linebuf, sizeof(linebuf), fp)) {
            if (strlen(linebuf) >= 75 &&
                !strncmp(linebuf+6, matchbuf, strlen(matchbuf))) {
+               fclose(fp);
                return atoi(linebuf + 75);
            }
        }
+       fclose(fp);
     }
 
     return -1;
@@ -421,10 +411,9 @@ static void base64_encode_atom(unsigned char *data, int n, char *out)
 void run_httpd(const void *t, int authmask, const struct httpd_config *dcfg,
               const struct html_config *incfg)
 {
-    int fd;
+    int fd, ret;
     int authtype;
     char *authstring = NULL;
-    unsigned long ipaddr;
     struct fd *f;
     struct sockaddr_in addr;
     socklen_t addrlen;
@@ -443,19 +432,37 @@ void run_httpd(const void *t, int authmask, const struct httpd_config *dcfg,
     }
     addr.sin_family = AF_INET;
     if (!dcfg->address) {
+#ifdef RANDOM_LOCALHOST
+       unsigned long ipaddr;
        srand(0L);
        ipaddr = 0x7f000000;
        ipaddr += (1 + rand() % 255) << 16;
        ipaddr += (1 + rand() % 255) << 8;
        ipaddr += (1 + rand() % 255);
        addr.sin_addr.s_addr = htonl(ipaddr);
+#else
+       addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+#endif
        addr.sin_port = htons(0);
     } else {
        addr.sin_addr.s_addr = inet_addr(dcfg->address);
-       addr.sin_port = dcfg->port ? htons(dcfg->port) : 80;
+       addr.sin_port = dcfg->port ? htons(dcfg->port) : 0;
     }
     addrlen = sizeof(addr);
-    if (bind(fd, (struct sockaddr *)&addr, addrlen) < 0) {
+    ret = bind(fd, (const struct sockaddr *)&addr, addrlen);
+#ifdef RANDOM_LOCALHOST
+    if (ret < 0 && errno == EADDRNOTAVAIL && !dcfg->address) {
+       /*
+        * Some systems don't like us binding to random weird
+        * localhost-space addresses. Try again with the official
+        * INADDR_LOOPBACK.
+        */
+       addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+       addr.sin_port = htons(0);
+       ret = bind(fd, (const struct sockaddr *)&addr, addrlen);
+    }
+#endif
+    if (ret < 0) {
        fprintf(stderr, "bind: %s\n", strerror(errno));
        exit(1);
     }
@@ -555,13 +562,13 @@ void run_httpd(const void *t, int authmask, const struct httpd_config *dcfg,
        fprintf(stderr, PNAME ": authentication method not supported\n");
        exit(1);
     }
-    if (!dcfg->address) {
-       if (ntohs(addr.sin_port) == 80) {
-           printf("URL: http://%s/\n", inet_ntoa(addr.sin_addr));
-       } else {
-           printf("URL: http://%s:%d/\n",
-                  inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
-       }
+    if (ntohs(addr.sin_addr.s_addr) == INADDR_ANY) {
+       printf("Server port: %d\n", ntohs(addr.sin_port));
+    } else if (ntohs(addr.sin_port) == 80) {
+       printf("URL: http://%s/\n", inet_ntoa(addr.sin_addr));
+    } else {
+       printf("URL: http://%s:%d/\n",
+              inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
     }
 
     /*
@@ -581,7 +588,9 @@ void run_httpd(const void *t, int authmask, const struct httpd_config *dcfg,
      */
     while (1) {
        fd_set rfds, wfds;
-       int i, j, maxfd, ret;
+       int i, j;
+       SELECT_TYPE_ARG1 maxfd;
+       int ret;
 
 #define FD_SET_MAX(fd, set, max) \
         do { FD_SET((fd),(set)); (max) = ((max)<=(fd)?(fd)+1:(max)); } while(0)
@@ -605,6 +614,8 @@ void run_httpd(const void *t, int authmask, const struct httpd_config *dcfg,
 
            switch (fds[i].type) {
              case FD_CLIENT:
+               FD_SET_MAX(fds[i].fd, &rfds, maxfd);
+               break;
              case FD_LISTENER:
                FD_SET_MAX(fds[i].fd, &rfds, maxfd);
                break;
@@ -630,7 +641,9 @@ void run_httpd(const void *t, int authmask, const struct httpd_config *dcfg,
        }
        nfds = i;
 
-        ret = select(maxfd, &rfds, &wfds, NULL, NULL);
+        ret = select(maxfd, SELECT_TYPE_ARG234 &rfds,
+                    SELECT_TYPE_ARG234 &wfds, SELECT_TYPE_ARG234 NULL,
+                    SELECT_TYPE_ARG5 NULL);
        if (ret <= 0) {
            if (ret < 0 && (errno != EINTR)) {
                fprintf(stderr, "select: %s", strerror(errno));