1 files changed, 0 insertions, 316 deletions
diff --git a/lib/mlibc/options/posix/generic/grp-stubs.cpp b/lib/mlibc/options/posix/generic/grp-stubs.cpp
deleted file mode 100644
index f8b2813..0000000
--- a/lib/mlibc/options/posix/generic/grp-stubs.cpp
+++ /dev/null
@@ -1,316 +0,0 @@
-
-#include <grp.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <bits/ensure.h>
-
-#include <mlibc/debug.hpp>
-#include <mlibc/posix-sysdeps.hpp>
-
-namespace {
-	FILE *global_file;
-
-	bool open_global_file() {
-		if(!global_file) {
-			global_file = fopen("/etc/group", "r");
-			if(!global_file) {
-				errno = EIO;
-				return false;
-			}
-		}
-
-		return true;
-	}
-
-	void close_global_file() {
-		if(global_file) {
-			fclose(global_file);
-			global_file = nullptr;
-		}
-	}
-
-	template<typename F>
-	void walk_segments(frg::string_view line, char delimiter, F fn) {
-		size_t s = 0;
-		while(true) {
-			size_t d = line.find_first(delimiter, s);
-			if(d == size_t(-1))
-				break;
-			auto chunk = line.sub_string(s, d - s);
-			fn(chunk);
-			s = d + 1;
-		}
-		if(line[s]) {
-			auto chunk = line.sub_string(s, line.size() - s);
-
-			if (chunk.size() > 0) {
-				// Remove trailing newline
-				if (chunk[chunk.size() - 1] == '\n')
-					chunk = chunk.sub_string(0, chunk.size() - 1);
-
-				fn(chunk);
-			}
-		}
-	}
-
-	bool extract_entry(frg::string_view line, group *entry) {
-		frg::string_view segments[5];
-
-		// Parse the line into 3 or 4 segments (depending if the group has members or not)
-		int n = 0;
-		walk_segments(line, ':', [&] (frg::string_view s) {
-			__ensure(n < 4);
-			segments[n++] = s;
-		});
-
-		if(n < 3) // n can be 3 when there are no members in the group
-			return false;
-
-		// TODO: Handle strndup() and malloc() failure.
-		auto name = strndup(segments[0].data(), segments[0].size());
-		__ensure(name);
-
-		auto passwd = strndup(segments[1].data(), segments[1].size());
-
-		auto gid = segments[2].to_number<int>();
-		if(!gid)
-			return false;
-
-		size_t n_members = 0;
-		walk_segments(segments[3], ',', [&] (frg::string_view) {
-			n_members++;
-		});
-
-		auto members = reinterpret_cast<char **>(malloc(sizeof(char *) * (n_members + 1)));
-		__ensure(members);
-		size_t k = 0;
-		walk_segments(segments[3], ',', [&] (frg::string_view m) {
-			members[k] = strndup(m.data(), m.size());
-			__ensure(members[k]);
-			k++;
-		});
-		members[k] = nullptr;
-
-		entry->gr_name = name;
-		entry->gr_passwd = passwd;
-		entry->gr_gid = *gid;
-		entry->gr_mem = members;
-		return true;
-	}
-
-	void clear_entry(group *entry) {
-		free(entry->gr_name);
-		if(entry->gr_mem) {
-			for(size_t i = 0; entry->gr_mem[i]; i++)
-				free(entry->gr_mem[i]);
-			free(entry->gr_mem);
-		}
-		entry->gr_name = nullptr;
-		entry->gr_mem = nullptr;
-	}
-
-	template<typename C>
-	int walk_file(struct group *entry, C cond) {
-		auto file = fopen("/etc/group", "r");
-		if(!file) {
-			return EIO;
-		}
-
-		char line[512];
-		while(fgets(line, 512, file)) {
-			if(!extract_entry(line, entry))
-				continue;
-			if(cond(entry)) {
-				fclose(file);
-				return 0;
-			}
-		}
-
-		int err = ESRCH;
-		if(ferror(file)) {
-			err = EIO;
-		}
-
-		fclose(file);
-		return err;
-	}
-
-	int copy_to_buffer(struct group *grp, char *buffer, size_t size) {
-		// Adjust to correct alignment so that we can put gr_mem first in buffer
-		uintptr_t mask = sizeof(char *) - 1;
-		size_t offset = (reinterpret_cast<uintptr_t>(buffer) % sizeof(char *) + mask) & ~mask;
-		if (size < offset)
-			return ERANGE;
-
-		buffer += offset;
-		size -= offset;
-
-		// Calculate the amount of space we need
-		size_t nmemb, required_size = 0;
-		for (nmemb = 0; grp->gr_mem[nmemb] != nullptr; nmemb++) {
-			// One for the string's null terminator and one for the pointer in gr_mem
-			required_size += strlen(grp->gr_mem[nmemb]) + 1 + sizeof(char *);
-		}
-
-		// One for null terminator of gr_name, plus sizeof(char *) for nullptr terminator of gr_mem
-		required_size += strlen(grp->gr_name) + 1 + sizeof(char *);
-		if (size < required_size)
-			return ERANGE;
-
-		// Put the gr_mem array first in the buffer as we are guaranteed
-		// that the pointer is aligned correctly
-		char *string_data = buffer + (nmemb + 1) * sizeof(char *);
-
-		for (size_t i = 0; i < nmemb; i++) {
-			reinterpret_cast<char **>(buffer)[i] = string_data;
-			string_data = stpcpy(string_data, grp->gr_mem[i]) + 1;
-			free(grp->gr_mem[i]);
-		}
-
-		reinterpret_cast<char **>(buffer)[nmemb] = nullptr;
-		free(grp->gr_mem);
-		grp->gr_mem = reinterpret_cast<char **>(buffer);
-
-		char *gr_name = stpcpy(string_data, grp->gr_name) + 1;
-		free(grp->gr_name);
-		grp->gr_name = string_data;
-
-		__ensure(gr_name <= buffer + size);
-		return 0;
-	}
-}
-
-void endgrent(void) {
-	close_global_file();
-}
-
-struct group *getgrent(void) {
-	static group entry;
-	char line[512];
-
-	if(!open_global_file()) {
-		return nullptr;
-	}
-
-	if(fgets(line, 512, global_file)) {
-		clear_entry(&entry);
-		if(!extract_entry(line, &entry)) {
-			errno = EINVAL;
-			return nullptr;
-		}
-		return &entry;
-	}
-
-	if(ferror(global_file)) {
-		errno = EIO;
-	}
-
-	return nullptr;
-}
-
-struct group *getgrgid(gid_t gid) {
-	static group entry;
-
-	int err = walk_file(&entry, [&] (group *entry) {
-		return entry->gr_gid == gid;
-	});
-
-	if (err) {
-		errno = err;
-		return nullptr;
-	}
-
-	return &entry;
-}
-
-int getgrgid_r(gid_t gid, struct group *grp, char *buffer, size_t size, struct group **result) {
-	*result = nullptr;
-	int err = walk_file(grp, [&] (group *entry) {
-		return entry->gr_gid == gid;
-	});
-
-	if (err) {
-		return err;
-	}
-
-	err = copy_to_buffer(grp, buffer, size);
-	if (err) {
-		return err;
-	}
-
-	*result = grp;
-	return 0;
-}
-
-struct group *getgrnam(const char *name) {
-	static group entry;
-
-	int err = walk_file(&entry, [&] (group *entry) {
-		return !strcmp(entry->gr_name, name);
-	});
-
-	if (err) {
-		errno = err;
-		return nullptr;
-	}
-
-	return &entry;
-}
-
-int getgrnam_r(const char *name, struct group *grp, char *buffer, size_t size, struct group **result) {
-	*result = nullptr;
-
-	int err = walk_file(grp, [&] (group *entry) {
-		return !strcmp(entry->gr_name, name);
-	});
-
-	if (err) {
-		return err;
-	}
-
-	err = copy_to_buffer(grp, buffer, size);
-	if (err) {
-		return err;
-	}
-
-	*result = grp;
-	return 0;
-}
-
-void setgrent(void) {
-	if(!open_global_file()) {
-		return;
-	}
-	rewind(global_file);
-}
-
-int setgroups(size_t size, const gid_t *list) {
-	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_setgroups, -1);
-	if(int e = mlibc::sys_setgroups(size, list); e) {
-		errno = e;
-		return -1;
-	}
-	return 0;
-}
-
-int initgroups(const char *, gid_t) {
-	mlibc::infoLogger() << "mlibc: initgroups is a stub" << frg::endlog;
-	return 0;
-}
-
-int putgrent(const struct group *, FILE *) {
-	__ensure(!"Not implemented");
-	__builtin_unreachable();
-}
-
-struct group *fgetgrent(FILE *) {
-	__ensure(!"Not implemented");
-	__builtin_unreachable();
-}
-
-int getgrouplist(const char *, gid_t, gid_t *, int *) {
-	mlibc::infoLogger() << "mlibc: getgrouplist is a stub" << frg::endlog;
-	return 0;
-}