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The function signature of strstr is char *strstr(const char *haystack, const char *needle) Since you have declared needle a const char*, you are violating the contract. I recommend further re …

Response to edit#1: NB: The code post turned char* html = malloc(12); into this char html = malloc(12); which was only confusing for a little while :) A major problem you are encountering is your …

I would add that since indexes is expecting a char* as it's return value, that you should return a char*. …

sizeof bad. char* temp_path = malloc(sizeof(path)); path is a pointer. sizeof a pointer is 4 or 8 depending on architecture. Looks like you want the length of the strings, which is a different functio …

How many bytes have you allocated to pathcopy? How many bytes are you trying to stuff in it? (Ditto pathcopy2). Once you fix that, make sure newpath is sized properly. Also here's more trouble your …

EDIT Sorry again for the misdirect. The elusive 1 eludes me at least once a day. This strncpy(storage, buffer, count); is causing a problem. Content can be anything. And content can have bytes with v …

Scope. Pointers. Look at the difference between the way you create abs_path and the way you create query. This strncpy(abs_path, reqtar, aplen); changes the contents of the memory that abs_path points …

Yeah, gdb is "funny" about constants defined elsewhere. It has to do with optimization and compiler switches (and other stuff I know I don't know). Here's how the *_OKs are defined in unistd.h. …

The other two errors indicate a problem in indexes, and specifically the second result \ expected output, not an exit code of 0 indicates a seg-fault. … Remember, the spec only asks indexes to determine if either file actually exists in path. access is a function that does just that. …

gdb hint: inspect the value of index in main after you return from indexes. The real problem comes here: char* ptr_best = try1; (and try2 too). …

Suggest you look into the access function (man access). scandir implies to me that you are reading through the whole directory to look for either of the two specified files. One problem with that appr …

First problem, indexes, responsible for these errors: :( Requesting /test/ outputs /test/index.html :( Requesting directory containing index.php outputs index.php From the specification: …

valgrind is complaining because you are treating a like a string e.g. strcmp(a,".css"), but you haven't created a string. The thing that makes a string a string is the terminating null byte. Your a do …

Unexpected end of input Indicates a timeout on the check50 server. It has not processed your request. The only advice is "try again later". error 404 Assuming you mean the "non_existAnt" fi …

Other things from a quick readthrough: This didn't work in parse, it's not gonna work in indexes. … There are (other) fundamental problems in indexes. You need to go through it carefully and critically because it is not doing what the spec requires. …