Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "pkt-line.h"
   3#include "quote.h"
   4#include <sys/wait.h>
   5
   6int get_ack(int fd, unsigned char *result_sha1)
   7{
   8        static char line[1000];
   9        int len = packet_read_line(fd, line, sizeof(line));
  10
  11        if (!len)
  12                die("git-fetch-pack: expected ACK/NAK, got EOF");
  13        if (line[len-1] == '\n')
  14                line[--len] = 0;
  15        if (!strcmp(line, "NAK"))
  16                return 0;
  17        if (!strncmp(line, "ACK ", 3)) {
  18                if (!get_sha1_hex(line+4, result_sha1))
  19                        return 1;
  20        }
  21        die("git-fetch_pack: expected ACK/NAK, got '%s'", line);
  22}
  23
  24int path_match(const char *path, int nr, char **match)
  25{
  26        int i;
  27        int pathlen = strlen(path);
  28
  29        for (i = 0; i < nr; i++) {
  30                char *s = match[i];
  31                int len = strlen(s);
  32
  33                if (!len || len > pathlen)
  34                        continue;
  35                if (memcmp(path + pathlen - len, s, len))
  36                        continue;
  37                if (pathlen > len && path[pathlen - len - 1] != '/')
  38                        continue;
  39                *s = 0;
  40                return 1;
  41        }
  42        return 0;
  43}
  44
  45/*
  46 * Yeah, yeah, fixme. Need to pass in the heads etc.
  47 */
  48int git_connect(int fd[2], char *url, const char *prog)
  49{
  50        char command[1024];
  51        const char *host, *path;
  52        char *colon;
  53        int pipefd[2][2];
  54        pid_t pid;
  55
  56        host = NULL;
  57        path = url;
  58        colon = strchr(url, ':');
  59        if (colon) {
  60                *colon = 0;
  61                host = url;
  62                path = colon+1;
  63        }
  64        if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
  65                die("unable to create pipe pair for communication");
  66        pid = fork();
  67        if (!pid) {
  68                snprintf(command, sizeof(command), "%s %s", prog,
  69                         sq_quote(path));
  70                dup2(pipefd[1][0], 0);
  71                dup2(pipefd[0][1], 1);
  72                close(pipefd[0][0]);
  73                close(pipefd[0][1]);
  74                close(pipefd[1][0]);
  75                close(pipefd[1][1]);
  76                if (host)
  77                        execlp("ssh", "ssh", host, command, NULL);
  78                else
  79                        execlp("sh", "sh", "-c", command, NULL);
  80                die("exec failed");
  81        }               
  82        fd[0] = pipefd[0][0];
  83        fd[1] = pipefd[1][1];
  84        close(pipefd[0][1]);
  85        close(pipefd[1][0]);
  86        return pid;
  87}
  88
  89int finish_connect(pid_t pid)
  90{
  91        int ret;
  92
  93        for (;;) {
  94                ret = waitpid(pid, NULL, 0);
  95                if (!ret)
  96                        break;
  97                if (errno != EINTR)
  98                        break;
  99        }
 100        return ret;
 101}