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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@login.dknet.dk> 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
* ----------------------------------------------------------------------------
*
* $Id: ctm_pass3.c,v 1.10.4.1 1995/09/06 14:20:22 davidg Exp $
*
*/
#include "ctm.h"
#define BADREAD 32
/*---------------------------------------------------------------------------*/
/* Pass3 -- Validate the incoming CTM-file.
*/
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];
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
for(;;) {
if(md5) {Free(md5), md5 = 0;}
if(uid) {Free(uid), uid = 0;}
if(gid) {Free(gid), gid = 0;}
if(mode) {Free(mode), mode = 0;}
if(md5before) {Free(md5before), md5before = 0;}
if(trash) {Free(trash), trash = 0;}
if(name) {Free(name), name = 0;}
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: GETFIELDCOPY(name,sep); 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';
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) {
perror(name);
WRONG
}
if(cnt != write(i,trash,cnt)) {
perror(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
}
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)) {
perror(name);
pclose(ed);
WRONG
}
fprintf(ed,"w %s\n",name);
if(pclose(ed)) {
perror("ed");
WRONG
}
if(strcmp(md5,MD5File(name,md5_1))) {
fprintf(stderr," %s %s MD5 didn't come out right\n",
sp->Key,name);
WRONG
}
continue;
}
if(!strcmp(sp->Key,"FN")) {
strcpy(buf,name);
strcat(buf,".ctm");
i = ctm_edit(trash,cnt,name,buf);
if(i) {
fprintf(stderr," %s %s Edit failed with code %d.\n",
sp->Key,name,i);
WRONG
}
rename(buf,name);
if(strcmp(md5,MD5File(name,md5_1))) {
fprintf(stderr," %s %s Edit failed MD5 check.\n",
sp->Key,name);
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
}
continue;
}
if(!strcmp(sp->Key,"FR")) {
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)
*/
sprintf(buf,"rm -rf %s",name);
system(buf);
continue;
}
WRONG
}
q = MD5End (&ctx,md5_1);
GETFIELD(p,'\n');
if(strcmp(q,p)) WRONG
if (-1 != getc(fd)) WRONG
return 0;
}
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