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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_pass2.c,v 1.4 1994/09/22 02:49:19 phk Exp $
*
*/
#include "ctm.h"
#define BADREAD 32
/*---------------------------------------------------------------------------*/
/* Pass2 -- Validate the incoming CTM-file.
*/
int
Pass2(FILE *fd)
{
u_char *p,*q,*md5=0;
MD5_CTX ctx;
int i,j,sep,cnt;
u_char *trash=0,*name=0;
struct CTM_Syntax *sp;
struct stat st;
int ret = 0;
if(Verbose>3)
printf("Pass2 -- Checking if CTM-patch will apply\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
/* XXX Lookup name in /etc/ctm,conf, read stuff */
GETFIELD(p,' '); if(strcmp(Nbr,p)) WRONG
/* XXX Verify that this is the next patch to apply */
GETFIELD(p,' '); if(strcmp(TimeStamp,p)) WRONG
GETFIELD(p,'\n'); if(strcmp(Prefix,p)) WRONG
/* XXX drop or use ? */
for(;;) {
if(trash) {Free(trash), trash = 0;}
if(name) {Free(name), name = 0;}
if(md5) {Free(md5), md5 = 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);
/* XXX Check DR DM rec's for parent-dir */
if(j & CTM_Q_Name_New) {
/* XXX Check DR FR rec's for item */
if(-1 != stat(name,&st)) {
fprintf(stderr," %s: %s exists.\n",
sp->Key,name);
ret |= Exit_Forcible;
}
break;
}
if(-1 == stat(name,&st)) {
fprintf(stderr," %s: %s doesn't exists.\n",
sp->Key,name);
ret |= Exit_NotOK;
break;
}
if (j & CTM_Q_Name_Dir) {
if((st.st_mode & S_IFMT) != S_IFDIR) {
fprintf(stderr,
" %s: %s exist, but isn't dir.\n",
sp->Key,name);
ret |= Exit_NotOK;
}
break;
}
if (j & CTM_Q_Name_File) {
if((st.st_mode & S_IFMT) != S_IFREG) {
fprintf(stderr,
" %s: %s exist, but isn't file.\n",
sp->Key,name);
ret |= Exit_NotOK;
}
break;
}
break;
case CTM_F_Uid:
case CTM_F_Gid:
case CTM_F_Mode:
GETFIELD(p,sep);
break;
case CTM_F_MD5:
if(!name) WRONG
if(j & CTM_Q_MD5_Before) {
GETFIELD(p,sep);
if((st.st_mode & S_IFMT) == S_IFREG &&
strcmp(MD5File(name),p)) {
fprintf(stderr," %s: %s md5 mismatch.\n",
sp->Key,name);
if(j & CTM_Q_MD5_Force) {
if(Force)
fprintf(stderr," Can and will force.\n");
else
fprintf(stderr," Could have forced.n");
ret |= Exit_Forcible;
} else {
ret |= Exit_NotOK;
}
}
break;
}
if(j & CTM_Q_MD5_After) {
GETFIELDCOPY(md5,sep);
break;
}
/* Unqualified MD5 */
WRONG
break;
case CTM_F_Count:
GETBYTECNT(cnt,sep);
break;
case CTM_F_Bytes:
if(cnt < 0) WRONG
GETDATA(trash,cnt);
if(!strcmp(sp->Key,"FN")) {
p = tempnam(TmpDir,"CTMclient");
j = ctm_edit(trash,cnt,name,p);
if(j) {
fprintf(stderr," %s: %s edit returned %d.\n",
sp->Key,name,j);
ret |= j;
return ret;
} else if(strcmp(md5,MD5File(p))) {
fprintf(stderr," %s: %s edit fails.\n",
sp->Key,name);
ret |= Exit_Mess;
return ret;
}
unlink(p);
free(p);
}
break;
default: WRONG
}
}
}
q = MD5End (&ctx);
GETFIELD(p,'\n'); /* <MD5> */
if(strcmp(q,p)) WRONG
if (-1 != getc(fd)) WRONG
return ret;
}
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