| 1 | #include "substdio.h" |
| 2 | #include "stralloc.h" |
| 3 | #include "getln.h" |
| 4 | #include "readwrite.h" |
| 5 | #include "exit.h" |
| 6 | #include "open.h" |
| 7 | #include "error.h" |
| 8 | #include "strerr.h" |
| 9 | #include "byte.h" |
| 10 | #include "fifo.h" |
| 11 | |
| 12 | stralloc target = {0}; |
| 13 | char *to; |
| 14 | |
| 15 | #define FATAL "install: fatal: " |
| 16 | void nomem() { strerr_die2x(111,FATAL,"out of memory"); } |
| 17 | |
| 18 | char inbuf[SUBSTDIO_INSIZE]; |
| 19 | char outbuf[SUBSTDIO_OUTSIZE]; |
| 20 | substdio ssin; |
| 21 | substdio ssout; |
| 22 | |
| 23 | void doit(line) |
| 24 | stralloc *line; |
| 25 | { |
| 26 | char *x; |
| 27 | unsigned int xlen; |
| 28 | unsigned int i; |
| 29 | char *type; |
| 30 | char *uidstr; |
| 31 | char *gidstr; |
| 32 | char *modestr; |
| 33 | char *mid; |
| 34 | char *name; |
| 35 | unsigned long uid; |
| 36 | unsigned long gid; |
| 37 | unsigned long mode; |
| 38 | int fdin; |
| 39 | int fdout; |
| 40 | unsigned long zlen; |
| 41 | |
| 42 | x = line->s; xlen = line->len; |
| 43 | |
| 44 | type = x; |
| 45 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 46 | x[i++] = 0; x += i; xlen -= i; |
| 47 | |
| 48 | uidstr = x; |
| 49 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 50 | x[i++] = 0; x += i; xlen -= i; |
| 51 | |
| 52 | gidstr = x; |
| 53 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 54 | x[i++] = 0; x += i; xlen -= i; |
| 55 | |
| 56 | modestr = x; |
| 57 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 58 | x[i++] = 0; x += i; xlen -= i; |
| 59 | |
| 60 | mid = x; |
| 61 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 62 | x[i++] = 0; x += i; xlen -= i; |
| 63 | |
| 64 | name = x; |
| 65 | i = byte_chr(x,xlen,':'); if (i == xlen) return; |
| 66 | x[i++] = 0; x += i; xlen -= i; |
| 67 | |
| 68 | if (!stralloc_copys(&target,to)) nomem(); |
| 69 | if (!stralloc_cats(&target,mid)) nomem(); |
| 70 | if (!stralloc_cats(&target,name)) nomem(); |
| 71 | if (!stralloc_0(&target)) nomem(); |
| 72 | |
| 73 | uid = -1; if (*uidstr) scan_ulong(uidstr,&uid); |
| 74 | gid = -1; if (*gidstr) scan_ulong(gidstr,&gid); |
| 75 | scan_8long(modestr,&mode); |
| 76 | |
| 77 | switch(*type) { |
| 78 | case 'z': |
| 79 | scan_ulong(type + 1,&zlen); |
| 80 | |
| 81 | fdout = open_trunc(target.s); |
| 82 | if (fdout == -1) |
| 83 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 84 | substdio_fdbuf(&ssout,write,fdout,outbuf,sizeof(outbuf)); |
| 85 | |
| 86 | while (zlen--) |
| 87 | if (substdio_put(&ssout,"",1) == -1) |
| 88 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 89 | |
| 90 | if (substdio_flush(&ssout) == -1) |
| 91 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 92 | if (fsync(fdout) == -1) |
| 93 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 94 | close(fdout); |
| 95 | break; |
| 96 | |
| 97 | case 'p': |
| 98 | if (fifo_make(target.s,0700) == -1) |
| 99 | if (errno != error_exist) |
| 100 | strerr_die4sys(111,FATAL,"unable to mkfifo ",target.s,": "); |
| 101 | break; |
| 102 | |
| 103 | case 'd': |
| 104 | if (mkdir(target.s,0700) == -1) |
| 105 | if (errno != error_exist) |
| 106 | strerr_die4sys(111,FATAL,"unable to mkdir ",target.s,": "); |
| 107 | break; |
| 108 | |
| 109 | case 'c': |
| 110 | fdin = open_read(name); |
| 111 | if (fdin == -1) |
| 112 | strerr_die4sys(111,FATAL,"unable to read ",name,": "); |
| 113 | substdio_fdbuf(&ssin,read,fdin,inbuf,sizeof(inbuf)); |
| 114 | |
| 115 | fdout = open_trunc(target.s); |
| 116 | if (fdout == -1) |
| 117 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 118 | substdio_fdbuf(&ssout,write,fdout,outbuf,sizeof(outbuf)); |
| 119 | |
| 120 | switch(substdio_copy(&ssout,&ssin)) { |
| 121 | case -2: |
| 122 | strerr_die4sys(111,FATAL,"unable to read ",name,": "); |
| 123 | case -3: |
| 124 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 125 | } |
| 126 | |
| 127 | close(fdin); |
| 128 | if (substdio_flush(&ssout) == -1) |
| 129 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 130 | if (fsync(fdout) == -1) |
| 131 | strerr_die4sys(111,FATAL,"unable to write ",target.s,": "); |
| 132 | close(fdout); |
| 133 | break; |
| 134 | |
| 135 | default: |
| 136 | return; |
| 137 | } |
| 138 | |
| 139 | if (chown(target.s,uid,gid) == -1) |
| 140 | strerr_die4sys(111,FATAL,"unable to chown ",target.s,": "); |
| 141 | if (chmod(target.s,mode) == -1) |
| 142 | strerr_die4sys(111,FATAL,"unable to chmod ",target.s,": "); |
| 143 | } |
| 144 | |
| 145 | char buf[256]; |
| 146 | substdio in = SUBSTDIO_FDBUF(read,0,buf,sizeof(buf)); |
| 147 | stralloc line = {0}; |
| 148 | |
| 149 | void main(argc,argv) |
| 150 | int argc; |
| 151 | char **argv; |
| 152 | { |
| 153 | int match; |
| 154 | |
| 155 | umask(077); |
| 156 | |
| 157 | to = argv[1]; |
| 158 | if (!to) strerr_die2x(100,FATAL,"install: usage: install dir"); |
| 159 | |
| 160 | for (;;) { |
| 161 | if (getln(&in,&line,&match,'\n') == -1) |
| 162 | strerr_die2sys(111,FATAL,"unable to read input: "); |
| 163 | doit(&line); |
| 164 | if (!match) |
| 165 | _exit(0); |
| 166 | } |
| 167 | } |