|
|
|---|
start = str->getStart(); | start = str->getStart(); |
pos = readTrailer(); | pos = readTrailer(); |
| |
|
entries = NULL; |
|
|
// if there was a problem with the trailer, | // if there was a problem with the trailer, |
// try to reconstruct the xref table | // try to reconstruct the xref table |
if (pos == 0) { | if (pos == 0) { |
|
|
|---|
| |
// trailer is ok - read the xref table | // trailer is ok - read the xref table |
} else { | } else { |
if (size*sizeof(XRefEntry)/sizeof(XRefEntry) != size) { |
if ((size < 0) || (size*sizeof(XRefEntry)/sizeof(XRefEntry) != size)) { |
error(-1, "Invalid 'size' inside xref table."); | error(-1, "Invalid 'size' inside xref table."); |
ok = gFalse; | ok = gFalse; |
errCode = errDamaged; | errCode = errDamaged; |
|
|
|---|
n = atoi(p); | n = atoi(p); |
while ('0' <= *p && *p <= '9') ++p; | while ('0' <= *p && *p <= '9') ++p; |
while (isspace(*p)) ++p; | while (isspace(*p)) ++p; |
if (p == buf) |
if ((p == buf) || (n < 0)) /* must make progress */ |
return 0; | return 0; |
pos1 += (p - buf) + n * 20; | pos1 += (p - buf) + n * 20; |
} | } |
|
|
|---|
} | } |
s[i] = '\0'; | s[i] = '\0'; |
first = atoi(s); | first = atoi(s); |
|
if (first < 0) { |
|
error(-1, "Invalid 'first'"); |
|
goto err2; |
|
} |
while ((c = str->lookChar()) != EOF && isspace(c)) { | while ((c = str->lookChar()) != EOF && isspace(c)) { |
str->getChar(); | str->getChar(); |
} | } |
|
|
|---|
} | } |
s[i] = '\0'; | s[i] = '\0'; |
n = atoi(s); | n = atoi(s); |
|
if (n<=0) { |
|
error(-1, "Invalid 'n'"); |
|
goto err2; |
|
} |
while ((c = str->lookChar()) != EOF && isspace(c)) { | while ((c = str->lookChar()) != EOF && isspace(c)) { |
str->getChar(); | str->getChar(); |
} | } |
|
|
|---|
// table size | // table size |
if (first + n > size) { | if (first + n > size) { |
newSize = size + 256; | newSize = size + 256; |
if (newSize*sizeof(XRefEntry)/sizeof(XRefEntry) != newSize) { |
if ((newSize < 0) || (newSize*sizeof(XRefEntry)/sizeof(XRefEntry) != newSize)) { |
error(-1, "Invalid 'newSize'"); | error(-1, "Invalid 'newSize'"); |
goto err2; | goto err2; |
} | } |
|
|
|---|
// look for object | // look for object |
} else if (isdigit(*p)) { | } else if (isdigit(*p)) { |
num = atoi(p); | num = atoi(p); |
|
if (num < 0) { |
|
error(-1, "Invalid 'num' parameters."); |
|
return gFalse; |
|
} |
do { | do { |
++p; | ++p; |
} while (*p && isdigit(*p)); | } while (*p && isdigit(*p)); |
|
|
|---|
if (!strncmp(p, "obj", 3)) { | if (!strncmp(p, "obj", 3)) { |
if (num >= size) { | if (num >= size) { |
newSize = (num + 1 + 255) & ~255; | newSize = (num + 1 + 255) & ~255; |
if (newSize*sizeof(XRefEntry)/sizeof(XRefEntry) != newSize) { |
if ((newSize < 0) || (newSize*sizeof(XRefEntry)/sizeof(XRefEntry) != newSize)) { |
error(-1, "Invalid 'obj' parameters."); | error(-1, "Invalid 'obj' parameters."); |
return gFalse; | return gFalse; |
} | } |
