int
Pass1(FILE *fd, unsigned applied)
{
u_char *p,*q;
MD5_CTX ctx;
int i,j,sep,cnt;
u_char *md5=0,*name=0,*trash=0;
struct CTM_Syntax *sp;
int slashwarn=0, match=0, total_matches=0;
unsigned current;
char md5_1[33];
if(Verbose>3)
printf("Pass1 -- Checking integrity of incoming CTM-patch\n");
MD5Init (&ctx);
GETFIELD(p,' '); /* CTM_BEGIN */
if(strcmp(p,"CTM_BEGIN")) {
Fatal("Probably not a CTM-patch at all.");
if(Verbose>3)
fprintf(stderr,"Expected \"CTM_BEGIN\" got \"%s\".\n",p);
return 1;
}
GETFIELDCOPY(Version,' '); /* <Version> */
if(strcmp(Version,VERSION)) {
Fatal("CTM-patch is wrong version.");
if(Verbose>3)
fprintf(stderr,"Expected \"%s\" got \"%s\".\n",VERSION,p);
return 1;
}
GETFIELDCOPY(Name,' '); /* <Name> */
GETFIELDCOPY(Nbr,' '); /* <Nbr> */
GETFIELDCOPY(TimeStamp,' '); /* <TimeStamp> */
GETFIELDCOPY(Prefix,'\n'); /* <Prefix> */
sscanf(Nbr, "%u", ¤t);
if (FilterList || ListIt)
current = 0; /* ignore if -l or if filters are present */
if(current && current <= applied) {
if(Verbose > 0)
fprintf(stderr,"Delta number %u is already applied; ignoring.\n",
current);
return Exit_Version;
}
for(;;) {
Delete(md5);
Delete(name);
Delete(trash);
cnt = -1;
/* if a filter list is defined we assume that all pathnames require
an action opposite to that requested by the first filter in the
list.
If no filter is defined, all pathnames are assumed to match. */
match = (FilterList ? !(FilterList->Action) : CTM_FILTER_ENABLE);
GETFIELD(p,' '); /* CTM_something */
if (p[0] != 'C' || p[1] != 'T' || p[2] != 'M') {
Fatal("Expected CTM keyword.");
fprintf(stderr,"Got [%s]\n",p);
return 1;
}
if(!strcmp(p+3,"_END"))
break;
for(sp=Syntax;sp->Key;sp++)
if(!strcmp(p+3,sp->Key))
goto found;
Fatal("Expected CTM keyword.");
fprintf(stderr,"Got [%s]\n",p);
return 1;
found:
if(Verbose > 5)
fprintf(stderr,"%s ",sp->Key);
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';
if(Verbose > 5)
fprintf(stderr," %x(%d)",sp->List[i],sep);
switch (j & CTM_F_MASK) {
case CTM_F_Name: /* XXX check for garbage and .. */
GETFIELDCOPY(name,sep);
j = strlen(name);
if(name[j-1] == '/' && !slashwarn) {
fprintf(stderr,"Warning: contains trailing slash\n");
slashwarn++;
}
if (name[0] == '/') {
Fatal("Absolute paths are illegal.");
Delete(name);
return Exit_Mess;
}
q = name;
for (;;) {
if (q[0] == '.' && q[1] == '.')
if (q[2] == '/' || q[2] == '\0') {
Fatal("Paths containing '..' are illegal.");
Delete(name);
return Exit_Mess;
}
if ((q = strchr(q, '/')) == NULL)
break;
q++;
}
/* if we have been asked to `keep' files then skip
removes; i.e. we don't match these entries at
all. */
if (KeepIt &&
(!strcmp(sp->Key,"DR") || !strcmp(sp->Key,"FR"))) {
match = CTM_FILTER_DISABLE;
break;
}
/* If filter expression have been defined, match the
path name against the expression list. */
if (FilterList) {
struct CTM_Filter *filter;
for (filter = FilterList; filter;
filter = filter->Next) {
if (0 == regexec(&filter->CompiledRegex, name,
0, 0, 0))
/* if the name matches, adopt the
action */
match = filter->Action;
}
}
/* Add up the total number of matches */
total_matches += match;
break;
case CTM_F_Uid:
GETFIELD(p,sep);
while(*p) {
if(!isdigit(*p)) {
Fatal("Non-digit in uid.");
return 32;
}
p++;
}
break;
case CTM_F_Gid:
GETFIELD(p,sep);
while(*p) {
if(!isdigit(*p)) {
Fatal("Non-digit in gid.");
return 32;
}
p++;
}
break;
case CTM_F_Mode:
GETFIELD(p,sep);
while(*p) {
if(!isdigit(*p)) {
Fatal("Non-digit in mode.");
return 32;
}
p++;
}
break;
case CTM_F_MD5:
if(j & CTM_Q_MD5_Chunk) {
GETFIELDCOPY(md5,sep); /* XXX check for garbage */
} else if(j & CTM_Q_MD5_Before) {
GETFIELD(p,sep); /* XXX check for garbage */
} else if(j & CTM_Q_MD5_After) {
GETFIELD(p,sep); /* XXX check for garbage */
} else {
fprintf(stderr,"List = 0x%x\n",j);
Fatal("Unqualified MD5.");
return 32;
}
break;
case CTM_F_Count:
GETBYTECNT(cnt,sep);
break;
case CTM_F_Bytes:
if(cnt < 0) WRONG
GETDATA(trash,cnt);
p = MD5Data(trash,cnt,md5_1);
if(md5 && strcmp(md5,p)) {
Fatal("Internal MD5 failed.");
return Exit_Garbage;
default:
fprintf(stderr,"List = 0x%x\n",j);
Fatal("List had garbage.");
return Exit_Garbage;
}
}
}
if(Verbose > 5)
putc('\n',stderr);
if(ListIt && match)
printf("> %s %s\n", sp->Key, name);
}
Delete(md5);
Delete(name);
Delete(trash);
q = MD5End (&ctx,md5_1);
if(Verbose > 2)
printf("Expecting Global MD5 <%s>\n",q);
GETFIELD(p,'\n'); /* <MD5> */
if(Verbose > 2)
printf("Reference Global MD5 <%s>\n",p);
if(strcmp(q,p)) {
Fatal("MD5 sum doesn't match.");
fprintf(stderr,"\tI have:<%s>\n",q);
fprintf(stderr,"\tShould have been:<%s>\n",p);
return Exit_Garbage;
}
if (-1 != getc(fd)) {
if(!Force) {
Fatal("Trailing junk in CTM-file. Can Force with -F.");
return 16;
}
}
if ((Verbose > 1) && (0 == total_matches))
printf("No matches in \"%s\"\n", FileName);
return (total_matches ? Exit_OK : Exit_NoMatch);
}
int
PassB(FILE *fd)
{
u_char *p,*q;
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 *b = 0; /* backup command */
u_char buf[BUFSIZ];
char md5_1[33];
int ret = 0;
int match = 0;
struct CTM_Filter *filter = NULL;
if(Verbose>3)
printf("PassB -- Backing up files which would be changed.\n");
MD5Init (&ctx);
snprintf(buf, sizeof(buf), fmtcheck(TarCmd, TARCMD), BackupFile);
b=popen(buf, "w");
if(!b) { warn("%s", buf); return Exit_Garbage; }
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(;;) {
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 (KeepIt &&
(!strcmp(sp->Key,"DR") || !strcmp(sp->Key,"FR")))
continue;
/* match the name against the elements of the filter list. The
action associated with the last matched filter determines whether
this file should be ignored or backed up. */
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)
continue;
if (!strcmp(sp->Key,"FS") || !strcmp(sp->Key,"FN") ||
!strcmp(sp->Key,"AS") || !strcmp(sp->Key,"DR") ||
!strcmp(sp->Key,"FR")) {
/* send name to the archiver for a backup */
cnt = strlen(name);
if (cnt != fwrite(name,1,cnt,b) || EOF == fputc('\n',b)) {
warn("%s", name);
pclose(b);
WRONG;
}
}
}
ret = pclose(b);
Delete(md5);
Delete(uid);
Delete(gid);
Delete(mode);
Delete(md5before);
Delete(trash);
Delete(name);
q = MD5End (&ctx,md5_1);
GETFIELD(p,'\n'); /* <MD5> */
if(strcmp(q,p)) WRONG
if (-1 != getc(fd)) WRONG
return ret;
}
