FreeBSD-5.3/usr.sbin/ctm/ctm/ctm_pass3.c
/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD: src/usr.sbin/ctm/ctm/ctm_pass3.c,v 1.20 2002/03/25 13:53:29 phk Exp $
*
*/
#include "ctm.h"
#define BADREAD 32
/*---------------------------------------------------------------------------*/
/* Pass3 -- Validate the incoming CTM-file.
*/
int
settime(const char *name, const struct timeval *times)
{
if (SetTime)
if (utimes(name,times)) {
warn("utimes(): %s", name);
return -1;
}
return 0;
}
int
Pass3(FILE *fd)
{
u_char *p,*q,buf[BUFSIZ];
MD5_CTX ctx;
int i,j,sep,cnt;
u_char *md5=0,*md5before=0,*trash=0,*name=0,*uid=0,*gid=0,*mode=0;
struct CTM_Syntax *sp;
FILE *ed=0;
struct stat st;
char md5_1[33];
int match=0;
struct timeval times[2];
struct CTM_Filter *filter = NULL;
if(Verbose>3)
printf("Pass3 -- Applying the CTM-patch\n");
MD5Init (&ctx);
GETFIELD(p,' '); if(strcmp("CTM_BEGIN",p)) WRONG
GETFIELD(p,' '); if(strcmp(Version,p)) WRONG
GETFIELD(p,' '); if(strcmp(Name,p)) WRONG
GETFIELD(p,' '); if(strcmp(Nbr,p)) WRONG
GETFIELD(p,' '); if(strcmp(TimeStamp,p)) WRONG
GETFIELD(p,'\n'); if(strcmp(Prefix,p)) WRONG
/*
* This would be cleaner if mktime() worked in UTC rather than
* local time.
*/
if (SetTime) {
struct tm tm;
char *tz;
char buf[5];
int i;
#define SUBSTR(off,len) strncpy(buf, &TimeStamp[off], len), buf[len] = '\0'
#define WRONGDATE { fprintf(stderr, " %s failed date validation\n",\
TimeStamp); WRONG}
if (strlen(TimeStamp) != 15 || TimeStamp[14] != 'Z') WRONGDATE
for (i = 0; i < 14; i++)
if (!isdigit(TimeStamp[i])) WRONGDATE
tz = getenv("TZ");
if (setenv("TZ", "UTC", 1) < 0) WRONG
tzset();
tm.tm_isdst = tm.tm_gmtoff = 0;
SUBSTR(0, 4);
tm.tm_year = atoi(buf) - 1900;
SUBSTR(4, 2);
tm.tm_mon = atoi(buf) - 1;
if (tm.tm_mon < 0 || tm.tm_mon > 11) WRONGDATE
SUBSTR(6, 2);
tm.tm_mday = atoi(buf);
if (tm.tm_mday < 1 || tm.tm_mday > 31) WRONG;
SUBSTR(8, 2);
tm.tm_hour = atoi(buf);
if (tm.tm_hour > 24) WRONGDATE
SUBSTR(10, 2);
tm.tm_min = atoi(buf);
if (tm.tm_min > 59) WRONGDATE
SUBSTR(12, 2);
tm.tm_sec = atoi(buf);
if (tm.tm_min > 62) WRONGDATE /* allow leap seconds */
times[0].tv_sec = times[1].tv_sec = mktime(&tm);
if (times[0].tv_sec == -1) WRONGDATE
times[0].tv_usec = times[1].tv_usec = 0;
if (tz) {
if (setenv("TZ", tz, 1) < 0) WRONGDATE
} else {
unsetenv("TZ");
}
}
for(;;) {
Delete(md5);
Delete(uid);
Delete(gid);
Delete(mode);
Delete(md5before);
Delete(trash);
Delete(name);
cnt = -1;
GETFIELD(p,' ');
if (p[0] != 'C' || p[1] != 'T' || p[2] != 'M') WRONG
if(!strcmp(p+3,"_END"))
break;
for(sp=Syntax;sp->Key;sp++)
if(!strcmp(p+3,sp->Key))
goto found;
WRONG
found:
for(i=0;(j = sp->List[i]);i++) {
if (sp->List[i+1] && (sp->List[i+1] & CTM_F_MASK) != CTM_F_Bytes)
sep = ' ';
else
sep = '\n';
switch (j & CTM_F_MASK) {
case CTM_F_Name: GETNAMECOPY(name,sep,j, Verbose); break;
case CTM_F_Uid: GETFIELDCOPY(uid,sep); break;
case CTM_F_Gid: GETFIELDCOPY(gid,sep); break;
case CTM_F_Mode: GETFIELDCOPY(mode,sep); break;
case CTM_F_MD5:
if(j & CTM_Q_MD5_Before)
GETFIELDCOPY(md5before,sep);
else
GETFIELDCOPY(md5,sep);
break;
case CTM_F_Count: GETBYTECNT(cnt,sep); break;
case CTM_F_Bytes: GETDATA(trash,cnt); break;
default: WRONG
}
}
/* XXX This should go away. Disallow trailing '/' */
j = strlen(name)-1;
if(name[j] == '/') name[j] = '\0';
/*
* If a filter list is specified, run thru the filter list and
* match `name' against filters. If the name matches, set the
* required action to that specified in the filter.
* The default action if no filterlist is given is to match
* everything.
*/
match = (FilterList ? !(FilterList->Action) : CTM_FILTER_ENABLE);
for (filter = FilterList; filter; filter = filter->Next) {
if (0 == regexec(&filter->CompiledRegex, name,
0, 0, 0)) {
match = filter->Action;
}
}
if (CTM_FILTER_DISABLE == match) /* skip file if disabled */
continue;
if (Verbose > 0)
fprintf(stderr,"> %s %s\n",sp->Key,name);
if(!strcmp(sp->Key,"FM") || !strcmp(sp->Key, "FS")) {
i = open(name,O_WRONLY|O_CREAT|O_TRUNC,0666);
if(i < 0) {
warn("%s", name);
WRONG
}
if(cnt != write(i,trash,cnt)) {
warn("%s", name);
WRONG
}
close(i);
if(strcmp(md5,MD5File(name,md5_1))) {
fprintf(stderr," %s %s MD5 didn't come out right\n",
sp->Key,name);
WRONG
}
if (settime(name,times)) WRONG
continue;
}
if(!strcmp(sp->Key,"FE")) {
ed = popen("ed","w");
if(!ed) {
WRONG
}
fprintf(ed,"e %s\n",name);
if(cnt != fwrite(trash,1,cnt,ed)) {
warn("%s", name);
pclose(ed);
WRONG
}
fprintf(ed,"w %s\n",name);
if(pclose(ed)) {
warn("ed");
WRONG
}
if(strcmp(md5,MD5File(name,md5_1))) {
fprintf(stderr," %s %s MD5 didn't come out right\n",
sp->Key,name);
WRONG
}
if (settime(name,times)) WRONG
continue;
}
if(!strcmp(sp->Key,"FN")) {
strcpy(buf,name);
strcat(buf,TMPSUFF);
i = ctm_edit(trash,cnt,name,buf);
if(i) {
fprintf(stderr," %s %s Edit failed with code %d.\n",
sp->Key,name,i);
WRONG
}
if(strcmp(md5,MD5File(buf,md5_1))) {
fprintf(stderr," %s %s Edit failed MD5 check.\n",
sp->Key,name);
WRONG
}
if (rename(buf,name) == -1)
WRONG
if (settime(name,times)) WRONG
continue;
}
if(!strcmp(sp->Key,"DM")) {
if(0 > mkdir(name,0777)) {
sprintf(buf,"mkdir -p %s",name);
system(buf);
}
if(0 > stat(name,&st) || ((st.st_mode & S_IFMT) != S_IFDIR)) {
fprintf(stderr,"<%s> mkdir failed\n",name);
WRONG
}
if (settime(name,times)) WRONG
continue;
}
if(!strcmp(sp->Key,"FR")) {
if (KeepIt) {
if (Verbose > 1)
printf("<%s> not removed\n", name);
}
else if (0 != unlink(name)) {
fprintf(stderr,"<%s> unlink failed\n",name);
if (!Force)
WRONG
}
continue;
}
if(!strcmp(sp->Key,"DR")) {
/*
* We cannot use rmdir() because we do not get the directories
* in '-depth' order (cvs-cur.0018.gz for examples)
*/
if (KeepIt) {
if (Verbose > 1) {
printf("<%s> not removed\n", name);
}
} else {
sprintf(buf,"rm -rf %s",name);
system(buf);
}
continue;
}
WRONG
}
Delete(md5);
Delete(uid);
Delete(gid);
Delete(mode);
Delete(md5before);
Delete(trash);
Delete(name);
q = MD5End (&ctx,md5_1);
GETFIELD(p,'\n');
if(strcmp(q,p)) WRONG
if (-1 != getc(fd)) WRONG
return 0;
}