[qmail] / qmail-pw2u.c

#include <sys/types.h>
#include <sys/stat.h>
#include "substdio.h"
#include "readwrite.h"
#include "subfd.h"
#include "sgetopt.h"
#include "control.h"
#include "constmap.h"
#include "stralloc.h"
#include "fmt.h"
#include "str.h"
#include "scan.h"
#include "open.h"
#include "error.h"
#include "getln.h"
#include "auto_break.h"
#include "auto_qmail.h"
#include "auto_usera.h"

void die_chdir()
{
  substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to chdir\n");
  _exit(111);
}
void die_nomem()
{
  substdio_putsflush(subfderr,"qmail-pw2u: fatal: out of memory\n");
  _exit(111);
}
void die_read()
{
  substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to read input\n");
  _exit(111);
}
void die_write()
{
  substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to write output\n");
  _exit(111);
}
void die_control()
{
  substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to read controls\n");
  _exit(111);
}
void die_alias()
{
  substdio_puts(subfderr,"qmail-pw2u: fatal: unable to find ");
  substdio_puts(subfderr,auto_usera);
  substdio_puts(subfderr," user\n");
  substdio_flush(subfderr);
  _exit(111);
}
void die_home(fn) char *fn;
{
  substdio_puts(subfderr,"qmail-pw2u: fatal: unable to stat ");
  substdio_puts(subfderr,fn);
  substdio_puts(subfderr,"\n");
  substdio_flush(subfderr);
  _exit(111);
}
void die_user(s,len) char *s; unsigned int len;
{
  substdio_puts(subfderr,"qmail-pw2u: fatal: unable to find ");
  substdio_put(subfderr,s,len);
  substdio_puts(subfderr," user for subuser\n");
  substdio_flush(subfderr);
  _exit(111);
}

int flagalias = 0;
int flagnoupper = 1;
int homestrategy = 2;
/* 2: skip if home does not exist; skip if home is not owned by user */
/* 1: stop if home does not exist; skip if home is not owned by user */
/* 0: don't worry about home */

int okincl; stralloc incl = {0}; struct constmap mapincl;
int okexcl; stralloc excl = {0}; struct constmap mapexcl;
int okmana; stralloc mana = {0}; struct constmap mapmana;

stralloc allusers = {0}; struct constmap mapuser;

stralloc uugh = {0};
stralloc user = {0};
stralloc uidstr = {0};
stralloc gidstr = {0};
stralloc home = {0};
unsigned long uid;

stralloc line = {0};

void doaccount()
{
  struct stat st;
  int i;
  char *mailnames;
  char *x;
  unsigned int xlen;

  if (byte_chr(line.s,line.len,'\0') < line.len) return;

  x = line.s; xlen = line.len; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  if (!stralloc_copyb(&user,x,i)) die_nomem();
  if (!stralloc_0(&user)) die_nomem();
  ++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  ++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  if (!stralloc_copyb(&uidstr,x,i)) die_nomem();
  if (!stralloc_0(&uidstr)) die_nomem();
  scan_ulong(uidstr.s,&uid);
  ++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  if (!stralloc_copyb(&gidstr,x,i)) die_nomem();
  if (!stralloc_0(&gidstr)) die_nomem();
  ++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  ++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  if (!stralloc_copyb(&home,x,i)) die_nomem();
  if (!stralloc_0(&home)) die_nomem();

  if (!uid) return;
  if (flagnoupper)
    for (i = 0;i < user.len;++i)
      if ((user.s[i] >= 'A') && (user.s[i] <= 'Z'))
	return;
  if (okincl)
    if (!constmap(&mapincl,user.s,user.len - 1))
      return;
  if (okexcl)
    if (constmap(&mapexcl,user.s,user.len - 1))
      return;
  if (homestrategy) {
    if (stat(home.s,&st) == -1) {
      if (errno != error_noent) die_home(home.s);
      if (homestrategy == 1) die_home(home.s);
      return;
    }
    if (st.st_uid != uid) return;
  }

  if (!stralloc_copys(&uugh,":")) die_nomem();
  if (!stralloc_cats(&uugh,user.s)) die_nomem();
  if (!stralloc_cats(&uugh,":")) die_nomem();
  if (!stralloc_cats(&uugh,uidstr.s)) die_nomem();
  if (!stralloc_cats(&uugh,":")) die_nomem();
  if (!stralloc_cats(&uugh,gidstr.s)) die_nomem();
  if (!stralloc_cats(&uugh,":")) die_nomem();
  if (!stralloc_cats(&uugh,home.s)) die_nomem();
  if (!stralloc_cats(&uugh,":")) die_nomem();

  /* XXX: avoid recording in allusers unless sub actually needs it */
  if (!stralloc_cats(&allusers,user.s)) die_nomem();
  if (!stralloc_cats(&allusers,":")) die_nomem();
  if (!stralloc_catb(&allusers,uugh.s,uugh.len)) die_nomem();
  if (!stralloc_0(&allusers)) die_nomem();

  if (str_equal(user.s,auto_usera)) {
    if (substdio_puts(subfdout,"+") == -1) die_write();
    if (substdio_put(subfdout,uugh.s,uugh.len) == -1) die_write();
    if (substdio_puts(subfdout,"-::\n") == -1) die_write();
    flagalias = 1;
  }

  mailnames = 0;
  if (okmana)
    mailnames = constmap(&mapmana,user.s,user.len - 1);
  if (!mailnames)
    mailnames = user.s;

  for (;;) {
    while (*mailnames == ':') ++mailnames;
    if (!*mailnames) break;

    i = str_chr(mailnames,':');

    if (substdio_puts(subfdout,"=") == -1) die_write();
    if (substdio_put(subfdout,mailnames,i) == -1) die_write();
    if (substdio_put(subfdout,uugh.s,uugh.len) == -1) die_write();
    if (substdio_puts(subfdout,"::\n") == -1) die_write();
  
    if (*auto_break) {
      if (substdio_puts(subfdout,"+") == -1) die_write();
      if (substdio_put(subfdout,mailnames,i) == -1) die_write();
      if (substdio_put(subfdout,auto_break,1) == -1) die_write();
      if (substdio_put(subfdout,uugh.s,uugh.len) == -1) die_write();
      if (substdio_puts(subfdout,"-::\n") == -1) die_write();
    }

    mailnames += i;
  }
}

stralloc sub = {0};

void dosubuser()
{
  int i;
  char *x;
  unsigned int xlen;
  char *uugh;

  x = line.s; xlen = line.len; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  if (!stralloc_copyb(&sub,x,i)) die_nomem();
  ++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
  uugh = constmap(&mapuser,x,i);
  if (!uugh) die_user(x,i);
  ++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;

  if (substdio_puts(subfdout,"=") == -1) die_write();
  if (substdio_put(subfdout,sub.s,sub.len) == -1) die_write();
  if (substdio_puts(subfdout,uugh) == -1) die_write();
  if (substdio_puts(subfdout,"-:") == -1) die_write();
  if (substdio_put(subfdout,x,i) == -1) die_write();
  if (substdio_puts(subfdout,":\n") == -1) die_write();

  if (*auto_break) {
    if (substdio_puts(subfdout,"+") == -1) die_write();
    if (substdio_put(subfdout,sub.s,sub.len) == -1) die_write();
    if (substdio_put(subfdout,auto_break,1) == -1) die_write();
    if (substdio_puts(subfdout,uugh) == -1) die_write();
    if (substdio_puts(subfdout,"-:") == -1) die_write();
    if (substdio_put(subfdout,x,i) == -1) die_write();
    if (substdio_puts(subfdout,"-:\n") == -1) die_write();
  }
}

int fd;
substdio ss;
char ssbuf[SUBSTDIO_INSIZE];

void main(argc,argv)
int argc;
char **argv;
{
  int opt;
  int match;

  while ((opt = getopt(argc,argv,"ohHuUc:C")) != opteof)
    switch(opt) {
      case 'o': homestrategy = 2; break;
      case 'h': homestrategy = 1; break;
      case 'H': homestrategy = 0; break;
      case 'u': flagnoupper = 0; break;
      case 'U': flagnoupper = 1; break;
      case 'c': *auto_break = *optarg; break;
      case 'C': *auto_break = 0; break;
      case '?':
      default:
	_exit(100);
    }

  if (chdir(auto_qmail) == -1) die_chdir();

  /* no need for control_init() */

  okincl = control_readfile(&incl,"users/include",0);
  if (okincl == -1) die_control();
  if (okincl) if (!constmap_init(&mapincl,incl.s,incl.len,0)) die_nomem();

  okexcl = control_readfile(&excl,"users/exclude",0);
  if (okexcl == -1) die_control();
  if (okexcl) if (!constmap_init(&mapexcl,excl.s,excl.len,0)) die_nomem();

  okmana = control_readfile(&mana,"users/mailnames",0);
  if (okmana == -1) die_control();
  if (okmana) if (!constmap_init(&mapmana,mana.s,mana.len,1)) die_nomem();

  if (!stralloc_copys(&allusers,"")) die_nomem();

  for (;;) {
    if (getln(subfdin,&line,&match,'\n') == -1) die_read();
    doaccount();
    if (!match) break;
  }
  if (!flagalias) die_alias();

  fd = open_read("users/subusers");
  if (fd == -1) {
    if (errno != error_noent) die_control();
  }
  else {
    substdio_fdbuf(&ss,read,fd,ssbuf,sizeof(ssbuf));

    if (!constmap_init(&mapuser,allusers.s,allusers.len,1)) die_nomem();

    for (;;) {
      if (getln(&ss,&line,&match,'\n') == -1) die_read();
      dosubuser();
      if (!match) break;
    }

    close(fd);
  }

  fd = open_read("users/append");
  if (fd == -1) {
    if (errno != error_noent) die_control();
  }
  else {
    substdio_fdbuf(&ss,read,fd,ssbuf,sizeof(ssbuf));
    for (;;) {
      if (getln(&ss,&line,&match,'\n') == -1) die_read();
      if (substdio_put(subfdout,line.s,line.len) == -1) die_write();
      if (!match) break;
    }
  }

  if (substdio_puts(subfdout,".\n") == -1) die_write();
  if (substdio_flush(subfdout) == -1) die_write();
  _exit(0);
}
Commit	Line	Data
2117e02e MW	1	#include <sys/types.h>
	2	#include <sys/stat.h>
	3	#include "substdio.h"
	4	#include "readwrite.h"
	5	#include "subfd.h"
	6	#include "sgetopt.h"
	7	#include "control.h"
	8	#include "constmap.h"
	9	#include "stralloc.h"
	10	#include "fmt.h"
	11	#include "str.h"
	12	#include "scan.h"
	13	#include "open.h"
	14	#include "error.h"
	15	#include "getln.h"
	16	#include "auto_break.h"
	17	#include "auto_qmail.h"
	18	#include "auto_usera.h"
	19
	20	void die_chdir()
	21	{
	22	substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to chdir\n");
	23	_exit(111);
	24	}
	25	void die_nomem()
	26	{
	27	substdio_putsflush(subfderr,"qmail-pw2u: fatal: out of memory\n");
	28	_exit(111);
	29	}
	30	void die_read()
	31	{
	32	substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to read input\n");
	33	_exit(111);
	34	}
	35	void die_write()
	36	{
	37	substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to write output\n");
	38	_exit(111);
	39	}
	40	void die_control()
	41	{
	42	substdio_putsflush(subfderr,"qmail-pw2u: fatal: unable to read controls\n");
	43	_exit(111);
	44	}
	45	void die_alias()
	46	{
	47	substdio_puts(subfderr,"qmail-pw2u: fatal: unable to find ");
	48	substdio_puts(subfderr,auto_usera);
	49	substdio_puts(subfderr," user\n");
	50	substdio_flush(subfderr);
	51	_exit(111);
	52	}
	53	void die_home(fn) char *fn;
	54	{
	55	substdio_puts(subfderr,"qmail-pw2u: fatal: unable to stat ");
	56	substdio_puts(subfderr,fn);
	57	substdio_puts(subfderr,"\n");
	58	substdio_flush(subfderr);
	59	_exit(111);
	60	}
	61	void die_user(s,len) char *s; unsigned int len;
	62	{
	63	substdio_puts(subfderr,"qmail-pw2u: fatal: unable to find ");
	64	substdio_put(subfderr,s,len);
65	substdio_puts(subfderr," user for subuser\n");
66	substdio_flush(subfderr);
67	_exit(111);
68	}
69
70	int flagalias = 0;
71	int flagnoupper = 1;
72	int homestrategy = 2;
73	/* 2: skip if home does not exist; skip if home is not owned by user */
74	/* 1: stop if home does not exist; skip if home is not owned by user */
75	/* 0: don't worry about home */
76
77	int okincl; stralloc incl = {0}; struct constmap mapincl;
78	int okexcl; stralloc excl = {0}; struct constmap mapexcl;
79	int okmana; stralloc mana = {0}; struct constmap mapmana;
80
81	stralloc allusers = {0}; struct constmap mapuser;
82
83	stralloc uugh = {0};
84	stralloc user = {0};
85	stralloc uidstr = {0};
86	stralloc gidstr = {0};
87	stralloc home = {0};
88	unsigned long uid;
89
90	stralloc line = {0};
91
92	void doaccount()
93	{
94	struct stat st;
95	int i;
96	char *mailnames;
97	char *x;
98	unsigned int xlen;
99
100	if (byte_chr(line.s,line.len,'\0') < line.len) return;
101
102	x = line.s; xlen = line.len; i = byte_chr(x,xlen,':'); if (i == xlen) return;
103	if (!stralloc_copyb(&user,x,i)) die_nomem();
104	if (!stralloc_0(&user)) die_nomem();
105	++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
106	++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
107	if (!stralloc_copyb(&uidstr,x,i)) die_nomem();
108	if (!stralloc_0(&uidstr)) die_nomem();
109	scan_ulong(uidstr.s,&uid);
110	++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
111	if (!stralloc_copyb(&gidstr,x,i)) die_nomem();
112	if (!stralloc_0(&gidstr)) die_nomem();
113	++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
114	++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
115	if (!stralloc_copyb(&home,x,i)) die_nomem();
116	if (!stralloc_0(&home)) die_nomem();
117
118	if (!uid) return;
119	if (flagnoupper)
120	for (i = 0;i < user.len;++i)
121	if ((user.s[i] >= 'A') && (user.s[i] <= 'Z'))
122	return;
123	if (okincl)
124	if (!constmap(&mapincl,user.s,user.len - 1))
125	return;
126	if (okexcl)
127	if (constmap(&mapexcl,user.s,user.len - 1))
128	return;
129	if (homestrategy) {
130	if (stat(home.s,&st) == -1) {
131	if (errno != error_noent) die_home(home.s);
132	if (homestrategy == 1) die_home(home.s);
133	return;
134	}
135	if (st.st_uid != uid) return;
136	}
137
138	if (!stralloc_copys(&uugh,":")) die_nomem();
139	if (!stralloc_cats(&uugh,user.s)) die_nomem();
140	if (!stralloc_cats(&uugh,":")) die_nomem();
141	if (!stralloc_cats(&uugh,uidstr.s)) die_nomem();
142	if (!stralloc_cats(&uugh,":")) die_nomem();
143	if (!stralloc_cats(&uugh,gidstr.s)) die_nomem();
144	if (!stralloc_cats(&uugh,":")) die_nomem();
145	if (!stralloc_cats(&uugh,home.s)) die_nomem();
146	if (!stralloc_cats(&uugh,":")) die_nomem();
147
148	/* XXX: avoid recording in allusers unless sub actually needs it */
149	if (!stralloc_cats(&allusers,user.s)) die_nomem();
150	if (!stralloc_cats(&allusers,":")) die_nomem();
151	if (!stralloc_catb(&allusers,uugh.s,uugh.len)) die_nomem();
152	if (!stralloc_0(&allusers)) die_nomem();
153
154	if (str_equal(user.s,auto_usera)) {
155	if (substdio_puts(subfdout,"+") == -1) die_write();
156	if (substdio_put(subfdout,uugh.s,uugh.len) == -1) die_write();
157	if (substdio_puts(subfdout,"-::\n") == -1) die_write();
158	flagalias = 1;
159	}
160
161	mailnames = 0;
162	if (okmana)
163	mailnames = constmap(&mapmana,user.s,user.len - 1);
164	if (!mailnames)
165	mailnames = user.s;
166
167	for (;;) {
168	while (*mailnames == ':') ++mailnames;
169	if (!*mailnames) break;
170
171	i = str_chr(mailnames,':');
172
173	if (substdio_puts(subfdout,"=") == -1) die_write();
174	if (substdio_put(subfdout,mailnames,i) == -1) die_write();
175	if (substdio_put(subfdout,uugh.s,uugh.len) == -1) die_write();
176	if (substdio_puts(subfdout,"::\n") == -1) die_write();
177
178	if (*auto_break) {
179	if (substdio_puts(subfdout,"+") == -1) die_write();
180	if (substdio_put(subfdout,mailnames,i) == -1) die_write();
181	if (substdio_put(subfdout,auto_break,1) == -1) die_write();
182	if (substdio_put(subfdout,uugh.s,uugh.len) == -1) die_write();
183	if (substdio_puts(subfdout,"-::\n") == -1) die_write();
184	}
185
186	mailnames += i;
187	}
188	}
189
190	stralloc sub = {0};
191
192	void dosubuser()
193	{
194	int i;
195	char *x;
196	unsigned int xlen;
197	char *uugh;
198
199	x = line.s; xlen = line.len; i = byte_chr(x,xlen,':'); if (i == xlen) return;
200	if (!stralloc_copyb(&sub,x,i)) die_nomem();
201	++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
202	uugh = constmap(&mapuser,x,i);
203	if (!uugh) die_user(x,i);
204	++i; x += i; xlen -= i; i = byte_chr(x,xlen,':'); if (i == xlen) return;
205
206	if (substdio_puts(subfdout,"=") == -1) die_write();
207	if (substdio_put(subfdout,sub.s,sub.len) == -1) die_write();
208	if (substdio_puts(subfdout,uugh) == -1) die_write();
209	if (substdio_puts(subfdout,"-:") == -1) die_write();
210	if (substdio_put(subfdout,x,i) == -1) die_write();
211	if (substdio_puts(subfdout,":\n") == -1) die_write();
212
213	if (*auto_break) {
214	if (substdio_puts(subfdout,"+") == -1) die_write();
215	if (substdio_put(subfdout,sub.s,sub.len) == -1) die_write();
216	if (substdio_put(subfdout,auto_break,1) == -1) die_write();
217	if (substdio_puts(subfdout,uugh) == -1) die_write();
218	if (substdio_puts(subfdout,"-:") == -1) die_write();
219	if (substdio_put(subfdout,x,i) == -1) die_write();
220	if (substdio_puts(subfdout,"-:\n") == -1) die_write();
221	}
222	}
223
224	int fd;
225	substdio ss;
226	char ssbuf[SUBSTDIO_INSIZE];
227
228	void main(argc,argv)
229	int argc;
230	char **argv;
231	{
232	int opt;
233	int match;
234
235	while ((opt = getopt(argc,argv,"ohHuUc:C")) != opteof)
236	switch(opt) {
237	case 'o': homestrategy = 2; break;
238	case 'h': homestrategy = 1; break;
239	case 'H': homestrategy = 0; break;
240	case 'u': flagnoupper = 0; break;
241	case 'U': flagnoupper = 1; break;
242	case 'c': auto_break = optarg; break;
243	case 'C': *auto_break = 0; break;
244	case '?':
245	default:
246	_exit(100);
247	}
248
249	if (chdir(auto_qmail) == -1) die_chdir();
250
251	/* no need for control_init() */
252
253	okincl = control_readfile(&incl,"users/include",0);
254	if (okincl == -1) die_control();
255	if (okincl) if (!constmap_init(&mapincl,incl.s,incl.len,0)) die_nomem();
256
257	okexcl = control_readfile(&excl,"users/exclude",0);
258	if (okexcl == -1) die_control();
259	if (okexcl) if (!constmap_init(&mapexcl,excl.s,excl.len,0)) die_nomem();
260
261	okmana = control_readfile(&mana,"users/mailnames",0);
262	if (okmana == -1) die_control();
263	if (okmana) if (!constmap_init(&mapmana,mana.s,mana.len,1)) die_nomem();
264
265	if (!stralloc_copys(&allusers,"")) die_nomem();
266
267	for (;;) {
268	if (getln(subfdin,&line,&match,'\n') == -1) die_read();
269	doaccount();
270	if (!match) break;
271	}
272	if (!flagalias) die_alias();
273
274	fd = open_read("users/subusers");
275	if (fd == -1) {
276	if (errno != error_noent) die_control();
277	}
278	else {
279	substdio_fdbuf(&ss,read,fd,ssbuf,sizeof(ssbuf));
280
281	if (!constmap_init(&mapuser,allusers.s,allusers.len,1)) die_nomem();
282
283	for (;;) {
284	if (getln(&ss,&line,&match,'\n') == -1) die_read();
285	dosubuser();
286	if (!match) break;
287	}
288
289	close(fd);
290	}
291
292	fd = open_read("users/append");
293	if (fd == -1) {
294	if (errno != error_noent) die_control();
295	}
296	else {
297	substdio_fdbuf(&ss,read,fd,ssbuf,sizeof(ssbuf));
298	for (;;) {
299	if (getln(&ss,&line,&match,'\n') == -1) die_read();
300	if (substdio_put(subfdout,line.s,line.len) == -1) die_write();
301	if (!match) break;
302	}
303	}
304
305	if (substdio_puts(subfdout,".\n") == -1) die_write();
306	if (substdio_flush(subfdout) == -1) die_write();
307	_exit(0);
308	}