| 1 | /* |
| 2 | ashd - A Sane HTTP Daemon |
| 3 | Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com> |
| 4 | |
| 5 | This program is free software: you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation, either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | #include <string.h> |
| 21 | #include <stdio.h> |
| 22 | #include <unistd.h> |
| 23 | #include <fcntl.h> |
| 24 | #include <errno.h> |
| 25 | #include <sys/stat.h> |
| 26 | #include <stdint.h> |
| 27 | |
| 28 | #ifdef HAVE_CONFIG_H |
| 29 | #include <config.h> |
| 30 | #endif |
| 31 | #include <utils.h> |
| 32 | #include <log.h> |
| 33 | #include <resp.h> |
| 34 | |
| 35 | static void passdata(int in, int out) |
| 36 | { |
| 37 | int ret, len, off; |
| 38 | char *buf; |
| 39 | |
| 40 | buf = smalloc(65536); |
| 41 | while(1) { |
| 42 | len = read(in, buf, 65536); |
| 43 | if(len < 0) { |
| 44 | flog(LOG_ERR, "sendfile: could not read input: %s", strerror(errno)); |
| 45 | break; |
| 46 | } |
| 47 | if(len == 0) |
| 48 | break; |
| 49 | for(off = 0; off < len; off += ret) { |
| 50 | ret = write(out, buf + off, len - off); |
| 51 | if(ret < 0) { |
| 52 | flog(LOG_ERR, "sendfile: could not write output: %s", strerror(errno)); |
| 53 | break; |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | free(buf); |
| 58 | } |
| 59 | |
| 60 | static int strrcmp(char *str, char *end) |
| 61 | { |
| 62 | return(strcmp(str + strlen(str) - strlen(end), end)); |
| 63 | } |
| 64 | |
| 65 | static char *getmimetype(char *file, struct stat *sb) |
| 66 | { |
| 67 | /* Rewrite with libmagic. */ |
| 68 | if(!strrcmp(file, ".html")) |
| 69 | return("text/html"); |
| 70 | if(!strrcmp(file, ".xhtml")) |
| 71 | return("application/xhtml+xml"); |
| 72 | if(!strrcmp(file, ".txt")) |
| 73 | return("text/plain"); |
| 74 | return("application/octet-stream"); |
| 75 | } |
| 76 | |
| 77 | int main(int argc, char **argv) |
| 78 | { |
| 79 | char *file; |
| 80 | struct stat sb; |
| 81 | int fd; |
| 82 | |
| 83 | if(argc < 4) { |
| 84 | flog(LOG_ERR, "usage: sendfile METHOD URL REST"); |
| 85 | exit(1); |
| 86 | } |
| 87 | if((file = getenv("REQ_X_ASH_FILE")) == NULL) { |
| 88 | flog(LOG_ERR, "sendfile: needs to be called with the X-Ash-File header"); |
| 89 | exit(1); |
| 90 | } |
| 91 | if(*argv[3]) { |
| 92 | simpleerror(1, 404, "Not Found", "The requested URL has no corresponding resource."); |
| 93 | exit(0); |
| 94 | } |
| 95 | if(stat(file, &sb) || ((fd = open(file, O_RDONLY)) < 0)) { |
| 96 | flog(LOG_ERR, "sendfile: could not stat input file %s: %s", file, strerror(errno)); |
| 97 | simpleerror(1, 500, "Internal Error", "The server could not access its own data."); |
| 98 | exit(1); |
| 99 | } |
| 100 | |
| 101 | printf("HTTP/1.1 200 OK\r\n"); |
| 102 | printf("Content-Type: %s\r\n", getmimetype(file, &sb)); |
| 103 | printf("Content-Length: %ji\r\n", (intmax_t)sb.st_size); |
| 104 | printf("\r\n"); |
| 105 | fflush(stdout); |
| 106 | if(strcasecmp(argv[1], "head")) |
| 107 | passdata(fd, 1); |
| 108 | return(0); |
| 109 | } |