projects / thirdparty / git.git / blame
| Commit | Line | Data |
|---|---|---|
| a87e8be2 LT |
1 | #include "cache.h" |
| 2 | #include "pkt-line.h" | |
| 3 | #include <sys/socket.h> | |
| 4 | #include <netinet/in.h> | |
| 5 | ||
| 6 | static const char daemon_usage[] = "git-daemon [--port=n]"; | |
| 7 | ||
| 8 | static int upload(char *dir, int dirlen) | |
| 9 | { | |
| 10 | if (chdir(dir) < 0) | |
| 11 | return -1; | |
| 12 | chdir(".git"); | |
| 13 | ||
| 14 | /* | |
| 15 | * Security on the cheap. | |
| 16 | * | |
| 17 | * We want a readable HEAD, usable "objects" directory, and | |
| 18 | * a "git-daemon-export-ok" flag that says that the other side | |
| 19 | * is ok with us doing this. | |
| 20 | */ | |
| 21 | if (access("git-daemon-export-ok", F_OK) || | |
| 22 | access("objects/00", X_OK) || | |
| 23 | access("HEAD", R_OK)) | |
| 24 | return -1; | |
| 25 | ||
| 26 | /* git-upload-pack only ever reads stuff, so this is safe */ | |
| 27 | execlp("git-upload-pack", "git-upload-pack", ".", NULL); | |
| 28 | return -1; | |
| 29 | } | |
| 30 | ||
| 31 | static int execute(char *line, int len) | |
| 32 | { | |
| 33 | if (!strncmp("git-upload-pack /", line, 17)) | |
| 34 | return upload(line + 16, len - 16); | |
| 35 | ||
| 36 | fprintf(stderr, "got bad connection '%s'\n", line); | |
| 37 | return -1; | |
| 38 | } | |
| 39 | ||
| 40 | static void handle(int incoming, struct sockaddr_in *addr, int addrlen) | |
| 41 | { | |
| 42 | static char line[1000]; | |
| 43 | int len; | |
| 44 | ||
| 45 | if (fork()) { | |
| 46 | close(incoming); | |
| 47 | return; | |
| 48 | } | |
| 49 | ||
| 50 | dup2(incoming, 0); | |
| 51 | dup2(incoming, 1); | |
| 52 | close(incoming); | |
| 53 | len = packet_read_line(0, line, sizeof(line)); | |
| 54 | ||
| 55 | if (len && line[len-1] == '\n') | |
| 56 | line[--len] = 0; | |
| 57 | ||
| 58 | exit(execute(line, len)); | |
| 59 | } | |
| 60 | ||
| 61 | static int serve(int port) | |
| 62 | { | |
| 63 | int sockfd; | |
| 64 | struct sockaddr_in addr; | |
| 65 | ||
| 66 | sockfd = socket(PF_INET, SOCK_STREAM, IPPROTO_IP); | |
| 67 | if (sockfd < 0) | |
| 68 | die("unable to open socket (%s)", strerror(errno)); | |
| 69 | memset(&addr, 0, sizeof(addr)); | |
| 70 | addr.sin_port = htons(port); | |
| 71 | addr.sin_family = AF_INET; | |
| 72 | if (bind(sockfd, (void *)&addr, sizeof(addr)) < 0) | |
| 73 | die("unable to bind to port %d (%s)", port, strerror(errno)); | |
| 74 | if (listen(sockfd, 5) < 0) | |
| 75 | die("unable to listen to port %d (%s)", port, strerror(errno)); | |
| 76 | ||
| 77 | for (;;) { | |
| 78 | struct sockaddr_in in; | |
| 79 | socklen_t addrlen = sizeof(in); | |
| 80 | int incoming = accept(sockfd, (void *)&in, &addrlen); | |
| 81 | ||
| 82 | if (incoming < 0) { | |
| 83 | switch (errno) { | |
| 84 | case EAGAIN: | |
| 85 | case EINTR: | |
| 86 | case ECONNABORTED: | |
| 87 | continue; | |
| 88 | default: | |
| 89 | die("accept returned %s", strerror(errno)); | |
| 90 | } | |
| 91 | } | |
| 92 | handle(incoming, &in, addrlen); | |
| 93 | } | |
| 94 | } | |
| 95 | ||
| 96 | int main(int argc, char **argv) | |
| 97 | { | |
| 98 | int port = DEFAULT_GIT_PORT; | |
| 99 | int i; | |
| 100 | ||
| 101 | for (i = 1; i < argc; i++) { | |
| 102 | char *arg = argv[i]; | |
| 103 | ||
| 104 | if (!strncmp(arg, "--port=", 7)) { | |
| 105 | char *end; | |
| 106 | unsigned long n; | |
| 107 | n = strtoul(arg+7, &end, 0); | |
| 108 | if (arg[7] && !*end) { | |
| 109 | port = n; | |
| 110 | continue; | |
| 111 | } | |
| 112 | } | |
| 113 | usage(daemon_usage); | |
| 114 | } | |
| 115 | ||
| 116 | return serve(port); | |
| 117 | } |