~mdw / qmail / blame
| Commit | Line | Data |
|---|---|---|
| 2117e02e MW |
1 | #include "fd.h" |
| 2 | #include "sgetopt.h" | |
| 3 | #include "readwrite.h" | |
| 4 | #include "subfd.h" | |
| 5 | #include "substdio.h" | |
| 6 | #include "exit.h" | |
| 7 | #include "fork.h" | |
| 8 | #include "wait.h" | |
| 9 | #include "env.h" | |
| 10 | #include "sig.h" | |
| 11 | #include "error.h" | |
| 12 | ||
| 13 | void die(e,s) int e; char *s; { substdio_putsflush(subfderr,s); _exit(e); } | |
| 14 | void die_usage() { die(100,"preline: fatal: incorrect usage\n"); } | |
| 15 | void die_temp() { die(111,"preline: fatal: temporary problem\n"); } | |
| 16 | void die_read() { die(111,"preline: fatal: unable to read message\n"); } | |
| 17 | void die_badcmd() { die(100,"preline: fatal: command not found\n"); } | |
| 18 | ||
| 19 | int flagufline = 1; char *ufline; | |
| 20 | int flagrpline = 1; char *rpline; | |
| 21 | int flagdtline = 1; char *dtline; | |
| 22 | ||
| 23 | substdio ssout; | |
| 24 | char outbuf[SUBSTDIO_OUTSIZE]; | |
| 25 | substdio ssin; | |
| 26 | char inbuf[SUBSTDIO_INSIZE]; | |
| 27 | ||
| 28 | void main(argc,argv) | |
| 29 | int argc; | |
| 30 | char **argv; | |
| 31 | { | |
| 32 | int opt; | |
| 33 | int pi[2]; | |
| 34 | int pid; | |
| 35 | int wstat; | |
| 36 | ||
| 37 | sig_pipeignore(); | |
| 38 | ||
| 39 | if (!(ufline = env_get("UFLINE"))) die_usage(); | |
| 40 | if (!(rpline = env_get("RPLINE"))) die_usage(); | |
| 41 | if (!(dtline = env_get("DTLINE"))) die_usage(); | |
| 42 | ||
| 43 | while ((opt = getopt(argc,argv,"frdFRD")) != opteof) | |
| 44 | switch(opt) | |
| 45 | { | |
| 46 | case 'f': flagufline = 0; break; | |
| 47 | case 'r': flagrpline = 0; break; | |
| 48 | case 'd': flagdtline = 0; break; | |
| 49 | case 'F': flagufline = 1; break; | |
| 50 | case 'R': flagrpline = 1; break; | |
| 51 | case 'D': flagdtline = 1; break; | |
| 52 | default: | |
| 53 | _exit(100); | |
| 54 | } | |
| 55 | argc -= optind; | |
| 56 | argv += optind; | |
| 57 | if (!*argv) die_usage(); | |
| 58 | ||
| 59 | if (pipe(pi) == -1) die_temp(); | |
| 60 | ||
| 61 | switch(pid = fork()) | |
| 62 | { | |
| 63 | case -1: | |
| 64 | die_temp(); | |
| 65 | case 0: | |
| 66 | close(pi[1]); | |
| 67 | if (fd_move(0,pi[0])) die_temp(); | |
| 68 | sig_pipedefault(); | |
| 69 | execvp(*argv,argv); | |
| 70 | if (error_temp(errno)) die_temp(); | |
| 71 | die_badcmd(); | |
| 72 | } | |
| 73 | close(pi[0]); | |
| 74 | ||
| 75 | substdio_fdbuf(&ssout,write,pi[1],outbuf,sizeof(outbuf)); | |
| 76 | substdio_fdbuf(&ssin,read,0,inbuf,sizeof(inbuf)); | |
| 77 | if (flagufline) substdio_bputs(&ssout,ufline); | |
| 78 | if (flagrpline) substdio_bputs(&ssout,rpline); | |
| 79 | if (flagdtline) substdio_bputs(&ssout,dtline); | |
| 80 | if (substdio_copy(&ssout,&ssin) == -2) die_read(); | |
| 81 | substdio_flush(&ssout); | |
| 82 | close(pi[1]); | |
| 83 | ||
| 84 | if (wait_pid(&wstat,pid) == -1) die_temp(); | |
| 85 | if (wait_crashed(wstat)) die_temp(); | |
| 86 | _exit(wait_exitcode(wstat)); | |
| 87 | } |