-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add a "git-daemon" that listens on a TCP port
.. and does a "git-upload-pack" on demand.
- Loading branch information
Linus Torvalds
committed
Jul 14, 2005
1 parent
85c414b
commit a87e8be
Showing
2 changed files
with
118 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,117 @@ | ||
#include "cache.h" | ||
#include "pkt-line.h" | ||
#include <sys/socket.h> | ||
#include <netinet/in.h> | ||
|
||
static const char daemon_usage[] = "git-daemon [--port=n]"; | ||
|
||
static int upload(char *dir, int dirlen) | ||
{ | ||
if (chdir(dir) < 0) | ||
return -1; | ||
chdir(".git"); | ||
|
||
/* | ||
* Security on the cheap. | ||
* | ||
* We want a readable HEAD, usable "objects" directory, and | ||
* a "git-daemon-export-ok" flag that says that the other side | ||
* is ok with us doing this. | ||
*/ | ||
if (access("git-daemon-export-ok", F_OK) || | ||
access("objects/00", X_OK) || | ||
access("HEAD", R_OK)) | ||
return -1; | ||
|
||
/* git-upload-pack only ever reads stuff, so this is safe */ | ||
execlp("git-upload-pack", "git-upload-pack", ".", NULL); | ||
return -1; | ||
} | ||
|
||
static int execute(char *line, int len) | ||
{ | ||
if (!strncmp("git-upload-pack /", line, 17)) | ||
return upload(line + 16, len - 16); | ||
|
||
fprintf(stderr, "got bad connection '%s'\n", line); | ||
return -1; | ||
} | ||
|
||
static void handle(int incoming, struct sockaddr_in *addr, int addrlen) | ||
{ | ||
static char line[1000]; | ||
int len; | ||
|
||
if (fork()) { | ||
close(incoming); | ||
return; | ||
} | ||
|
||
dup2(incoming, 0); | ||
dup2(incoming, 1); | ||
close(incoming); | ||
len = packet_read_line(0, line, sizeof(line)); | ||
|
||
if (len && line[len-1] == '\n') | ||
line[--len] = 0; | ||
|
||
exit(execute(line, len)); | ||
} | ||
|
||
static int serve(int port) | ||
{ | ||
int sockfd; | ||
struct sockaddr_in addr; | ||
|
||
sockfd = socket(PF_INET, SOCK_STREAM, IPPROTO_IP); | ||
if (sockfd < 0) | ||
die("unable to open socket (%s)", strerror(errno)); | ||
memset(&addr, 0, sizeof(addr)); | ||
addr.sin_port = htons(port); | ||
addr.sin_family = AF_INET; | ||
if (bind(sockfd, (void *)&addr, sizeof(addr)) < 0) | ||
die("unable to bind to port %d (%s)", port, strerror(errno)); | ||
if (listen(sockfd, 5) < 0) | ||
die("unable to listen to port %d (%s)", port, strerror(errno)); | ||
|
||
for (;;) { | ||
struct sockaddr_in in; | ||
socklen_t addrlen = sizeof(in); | ||
int incoming = accept(sockfd, (void *)&in, &addrlen); | ||
|
||
if (incoming < 0) { | ||
switch (errno) { | ||
case EAGAIN: | ||
case EINTR: | ||
case ECONNABORTED: | ||
continue; | ||
default: | ||
die("accept returned %s", strerror(errno)); | ||
} | ||
} | ||
handle(incoming, &in, addrlen); | ||
} | ||
} | ||
|
||
int main(int argc, char **argv) | ||
{ | ||
int port = DEFAULT_GIT_PORT; | ||
int i; | ||
|
||
for (i = 1; i < argc; i++) { | ||
char *arg = argv[i]; | ||
|
||
if (!strncmp(arg, "--port=", 7)) { | ||
char *end; | ||
unsigned long n; | ||
n = strtoul(arg+7, &end, 0); | ||
if (arg[7] && !*end) { | ||
port = n; | ||
continue; | ||
} | ||
} | ||
usage(daemon_usage); | ||
} | ||
|
||
return serve(port); | ||
} |