prompt.c

   1 #include "cache.h"
   2 #include "run-command.h"
   3 #include "strbuf.h"
   4 #include "prompt.h"
   5
   6 char *git_getpass(const char *prompt)
   7 {
   8         const char *askpass;
   9         struct child_process pass;
  10         const char *args[3];
  11         static struct strbuf buffer = STRBUF_INIT;
  12
  13         askpass = getenv("GIT_ASKPASS");
  14         if (!askpass)
  15                 askpass = askpass_program;
  16         if (!askpass)
  17                 askpass = getenv("SSH_ASKPASS");
  18         if (!askpass || !(*askpass)) {
  19                 char *result = getpass(prompt);
  20                 if (!result)
  21                         die_errno("Could not read password");
  22                 return result;
  23         }
  24
  25         args[0] = askpass;
  26         args[1] = prompt;
  27         args[2] = NULL;
  28
  29         memset(&pass, 0, sizeof(pass));
  30         pass.argv = args;
  31         pass.out = -1;
  32
  33         if (start_command(&pass))
  34                 exit(1);
  35
  36         strbuf_reset(&buffer);
  37         if (strbuf_read(&buffer, pass.out, 20) < 0)
  38                 die("failed to read password from %s\n", askpass);
  39
  40         close(pass.out);
  41
  42         if (finish_command(&pass))
  43                 exit(1);
  44
  45         strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n"));
  46
  47         return buffer.buf;
  48 }