Working as of 12/11

Makefile

@@ -1,6 +1,6 @@
 include config.mk
 
-all: prepare log log_test rt make_conf
+all: prepare log log_test rt istoreutils make_conf
 	@echo "libglacier-ng has finished building"
 
 prepare:
@@ -16,16 +16,29 @@ log:
 	cp src/log.h build/include/glacier/log.h
 
 log_test:
-	$(CC) $(CFLAGS) -shared -fPIC src/log.c -o build/lib/shared/lg_log.so
+	$(CC) $(CFLAGS) -shared -fPIC src/log.c -o build/lib/shared/libglacier_log.so
 
 rt:
 	$(CC) $(CFLAGS) src/runtime.c -c -o build/lib/tmp/runtime.o
 
+istoreutils:
+	
+	$(CC) $(CFLAGS) -shared -fPIC src/istoreutils.c \
+		-Lbuild/lib/shared -lglacier_log \
+		-Wl,-rpath,'$$ORIGIN' \
+		-o build/lib/shared/libglacier_istoreutils.so
+
 make_conf:
 	$(CC) $(CFLAGS) src/make_conf.c -c -o build/lib/tmp/make_conf.o
 
+install:
+	mkdir -p $(PREFIX)/lib/glacier/
+	install build/lib/shared/libglacier_log.so $(PREFIX)/lib/glacier/ -m 755
+	install build/lib/shared/libglacier_istoreutils.so $(PREFIX)/lib/glacier/ -m 755
+
 install_test_dir:
 	install build/lib/shared/lg_log.so $(TEST_DIR)
+	install build/lib/shared/
 
 clean:
 	rm -rf build

README

@@ -0,0 +1,51 @@
++ libglacier-ng
+
+Backend APIs for the Glacier package manager
+
++ Modularity
+
+Libglacier-ng is, by default, incredibly modular. The default featureset is very
+minimal, but modules are available for installtion. These modules allow for features
+such as HTML reports, remote package deployment, and more. Keep in mind that the
+more features you have installed, the larger the attack surface is. The default
+featureset should be sufficient for 99% of users.
+
++ Installation
+
+Libglacier-ng is provided by default as multiple shared object files (.so).
+Static compilation at this time is not possible because glacier-ng, which is primarily
+written in Lua, requires shared objects.
+
+Libglacier-ng depends on the following libraries:
+
+	~ libconfig
+
+Once these dependencies are installed, clone this repository:
+
+	+---------------------------------------------------------------------+
+	| $ git clone https://git.everestlinux.org/EverestLinux/libglacier-ng |
+	+---------------------------------------------------------------------+
+
+Enter the directory and make any desired modifications to config.mk:
+
+	+----------------------------------------------+
+	| $ cd libglacier                              |
+	| $ EDITOR="/bin/vim" # or your desired editor |
+	| $ ${EDITOR} config.mk                        |
+	+----------------------------------------------+
+
+Build and install the library:
+
+	+-----------------+
+	| $ make $(nproc) |
+	| # make install  |
+	+-----------------+
+
++ Documentation
+
+Online documentation can be accessed at https://www.everestlinux.org/docs/libglacier
+Offline documentationn can be accessed with the following command:
+
+	+--------------------+
+	| $ man 3 libglacier |
+	+--------------------+

build/lib/shared/libgl_log.so

@@ -0,0 +1 @@
+lg_log.so

config.mk

@@ -2,6 +2,8 @@
 # config.mk
 #
 
+PREFIX ?= /usr
+
 CFLAGS = -std=c11 -pedantic -O2 -flto -Wall -Wextra -Wshadow -Wformat=2 -Wconversion -Wpedantic -Werror
 
 TEST_DIR = /home/lw/Projects/glacier-ng/lib

src/bar.gpm.cfg

@@ -0,0 +1,17 @@
+#
+# bar
+#
+
+PKG_NAME = "bar";
+PKG_VER = 1.0.0;
+PKG_DESC = "example pkg";
+PKG_MAINT = "liamwaldron@everestlinux.org";
+PKG_COPYRIGHT = "GPL3";
+
+PKG_DEPS = (
+	{ PKG_NAME = "foo"; PKG_VER = 1.1.1; };
+);
+
+PKG_CONFS = (
+	{};
+);

src/common.h

@@ -1,15 +1,21 @@
 #ifndef COMMON_H_
 #define COMMON_H_
 
+#ifndef _POSIX_C_SOURCE
 #define _POSIX_C_SOURCE 200809L
+#endif
+#ifndef _DEFAULT_SOURCE
 #define _DEFAULT_SOURCE
+#endif
+#ifndef _XOPEN_SOURCE
 #define _XOPEN_SOURCE 700
+#endif
 
 #include <sys/types.h>
 
 typedef struct
 {
-	char *path;
+	const char *path;
 	mode_t mode;
 }
 dir_t;

src/dag.c

@@ -0,0 +1,132 @@
+#define _POSIX_C_SOURCE 200809L
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "graph.h"
+
+graph_t
+*graph_create(void)
+{
+	return calloc(1, sizeof(graph_t));
+}
+
+void
+graph_free(graph_t *g)
+{
+	if (!g) { return; }
+
+	for (size_t i = 0; i < g->node_count; i++) {
+		free(g->nodes[i]->edges);
+		free(g->nodes[i]);
+	}
+
+	free(g->nodes);
+	free(g);
+}
+
+graph_node_t
+*graph_add_node(graph_t *g, void *data)
+{
+	if (!g) { return NULL; }
+
+	graph_node_t *n = calloc(1, sizeof(graph_node_t));
+	if (!n) { return NULL; }
+	n->data = data;
+
+	graph_node_t **tmp = realloc(g->nodes, sizeof(*g->nodes) * (g->node_count + 1));
+	if (!tmp) {
+		free(n);
+		return NULL;
+	}
+
+	g->nodes = tmp;
+	g->nodes[g->node_count++] = n;
+	return n;
+}
+
+void
+graph_add_edge(graph_t *g, graph_node_t *from, graph_node_t *to)
+{
+	if (!g || !from || !to) { return; }
+	graph_node_t **tmp = realloc(from->edges, sizeof(*from->edges) * (from->edge_count + 1));
+	if (!tmp) { return; }
+	from->edges = tmp;
+	from->edges[from->edge_count++] = to;
+}
+
+static book
+dfs_cycle(graph_node_t *n)
+{
+	n->visited = true;
+	n->in_stack = true;
+
+	for (size_t i = 0; i < n->edge_count; i++) {
+		graph_node_t *child = n->edge[i];
+		if (!child->visited && dfs_cycle(child)) {
+			return true;
+		}
+		else if (child->in_stack) {
+			return true;
+		}
+	}
+
+	n->in_stack = false;
+	return false;
+}
+
+bool
+graph_has_cycle(graph_t *g)
+{
+	if (!g) { return false; }
+	for (size_t i = 0; i < g->node_count; i++) {
+		g->nodes[i]->visited = false;
+		g->nodes[i]->in_stack = false;
+	}
+	for (size_t i = 0; i < g->node_count; i++) {
+		if (!g->nodes[i]->visited && dfs_cycle(g->nodes[i])) {
+			return true;
+		}
+		return false;
+	}
+}
+
+static void
+dfs_toposort(graph_node_t *n, void **result, size_t *index)
+{
+	n->visited = true;
+	for (size_t i = 0; i < n->edge_count; i++) {
+		if (!n->edges[i]->visited) {
+			dfs_toposort(n->edges[i], result, index);
+		}
+	}
+
+	result[(*index)--] = n->data;
+}
+
+void
+**graph_toposort(graph_t *g, size_t *out_count)
+{
+	if (!g || !out_count) { return NULL; }
+	if (graph_has_cycle(g)) {
+		fprintf(stderr, "Error: dependency cycle detected\n");
+		return NULL;
+	}
+
+	*out_count = g->node_count;
+	void **order = calloc(g->node_count, sizeof(void *));
+	if (!order) { return NULL; }
+
+	for (size_t i = 0; i < g->node_count; i++) {
+		g->nodes[i]->visited = false;
+	}
+
+	ssize_t index = g->node_count - 1;
+	for (size_t i = 0; i < g->node_count; i++) {
+		if (!g->nodes[i]->visited) {
+			dfs_toposort(g->nodes[i], order, (size_t *)&index);
+		}
+	}
+
+	return order;
+}

src/dag.h

@@ -0,0 +1,34 @@
+#ifndef DAG_H_
+#define DAG_H_
+
+#define _POSIX_C_SOURCE 200809L
+
+#include <stdbool.h>
+#include <stddef.h>
+
+typedef struct graph_node graph_node_t;
+typedef struct graph graph_t;
+
+struct graph_node {
+	void *data;
+	graph_node_t **edges;
+	size_t edge_count;
+	bool visited;
+	bool in_stack;
+};
+
+struct graph {
+	graph_node_t **nodes;
+	size_t node_count;
+};
+
+graph_t *graph_create(void);
+void graph_free(graph_t *g);
+
+graph_node_t *graph_add_node(graph_t *g, void *data);
+void graph_add_edge(graph_t *g, graph_node_t *from, graph_node_t *to);
+
+bool graph_has_cycle(graph_t *g);
+void **graph_toposort(graph_t *g, size_t *out_count);
+
+#endif

src/glacier.cfg

@@ -0,0 +1,8 @@
+
+// If GL_ALLOW_NONFREE is false, software tagged as NONFREE cannot be installed,
+// even if NONFREE is listed under GL_ALLOWED_LICENSES.
+GL_ALLOW_NONFREE = false;
+
+// GL_ALLOWED_LICENSES allows a user to configure which kinds of software Glacier
+// is allowed to install.
+GL_ALLOWED_LICENSES = [ "GPL", "GPL2", "GPL3", "BSD", "MIT", "APACHE" ];

src/glacier.log

@@ -27,3 +27,5 @@
 [2025-10-22 15:59:02] [ERR] Failed to install package glibc
 [2025-10-22 15:59:07] [INFO] Glacier started with PID 12345
 [2025-10-22 15:59:07] [ERR] Failed to install package glibc
+[2025-10-29 09:19:46] [INFO] Glacier started with PID 12345
+[2025-10-29 09:19:46] [ERR] Failed to install package glibc

src/html/img/everest-nord.svg

@@ -0,0 +1 @@
+<svg version="1.1" viewBox="0.0 0.0 649.0 485.0" fill="none" stroke="none" stroke-linecap="square" stroke-miterlimit="10" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><clipPath id="p.0"><path d="m0 0l649.0 0l0 485.0l-649.0 0l0 -485.0z" clip-rule="nonzero"/></clipPath><g clip-path="url(#p.0)"><path fill="#000000" fill-opacity="0.0" d="m0 0l649.0 0l0 485.0l-649.0 0z" fill-rule="evenodd"/><path fill="#88c0d0" d="m31.519686 468.3622l194.38202 -378.26773l133.83844 378.26773z" fill-rule="evenodd"/><path stroke="#88c0d0" stroke-width="2.0" stroke-linejoin="round" stroke-linecap="butt" d="m31.519686 468.3622l194.38202 -378.26773l133.83844 378.26773z" fill-rule="evenodd"/><path fill="#5e81ac" d="m412.7575 222.75516l-135.9685 261.5433l-135.9685 -261.5433z" fill-rule="evenodd"/><path stroke="#5e81ac" stroke-width="2.0" stroke-linejoin="round" stroke-linecap="butt" d="m412.7575 222.75516l-135.9685 261.5433l-135.9685 -261.5433z" fill-rule="evenodd"/><path fill="#666666" d="m276.48984 484.30145l135.9685 -261.5433l135.96854 261.5433z" fill-rule="evenodd"/><path stroke="#666666" stroke-width="2.0" stroke-linejoin="round" stroke-linecap="butt" d="m276.48984 484.30145l135.9685 -261.5433l135.96854 261.5433z" fill-rule="evenodd"/><path fill="#5e81ac" d="m0 484.29922l130.77936 -246.89764l98.44899 246.89764z" fill-rule="evenodd"/><path stroke="#5e81ac" stroke-width="2.0" stroke-linejoin="round" stroke-linecap="butt" d="m0 484.29922l130.77936 -246.89764l98.44899 246.89764z" fill-rule="evenodd"/><path fill="#5e81ac" d="m276.4908 484.3176l185.43307 -378.26773l185.43304 378.26773z" fill-rule="evenodd"/><path stroke="#5e81ac" stroke-width="2.0" stroke-linejoin="round" stroke-linecap="butt" d="m276.4908 484.3176l185.43307 -378.26773l185.43304 378.26773z" fill-rule="evenodd"/><path fill="#88c0d0" d="m205.22047 134.99213l71.574814 -134.99213l71.5748 134.99213z" fill-rule="evenodd"/><path stroke="#88c0d0" stroke-width="1.0" stroke-linejoin="round" stroke-linecap="butt" d="m205.22047 134.99213l71.574814 -134.99213l71.5748 134.99213z" fill-rule="evenodd"/><path fill="#5e81ac" d="m140.82677 222.7559l70.13112 -134.99213l131.67477 0l70.131134 134.99213z" fill-rule="evenodd"/><path stroke="#5e81ac" stroke-width="2.0" stroke-linejoin="round" stroke-linecap="butt" d="m140.82677 222.7559l70.13112 -134.99213l131.67477 0l70.131134 134.99213z" fill-rule="evenodd"/><path fill="#5e81ac" d="m205.21523 99.13386l30.761414 -63.27559l112.3882 63.27559z" fill-rule="evenodd"/><path stroke="#5e81ac" stroke-width="1.0" stroke-linejoin="round" stroke-linecap="butt" d="m205.21523 99.13386l30.761414 -63.27559l112.3882 63.27559z" fill-rule="evenodd"/><path fill="#5e81ac" d="m205.22047 199.58267l195.68504 0l0 110.77167l-195.68504 0z" fill-rule="evenodd"/><path stroke="#5e81ac" stroke-width="1.0" stroke-linejoin="round" stroke-linecap="butt" d="m205.22047 199.58267l195.68504 0l0 110.77167l-195.68504 0z" fill-rule="evenodd"/><path fill="#5e81ac" d="m385.25198 283.9475l-106.83533 198.3937l-97.82611 -198.3937z" fill-rule="evenodd"/><path stroke="#5e81ac" stroke-width="1.0" stroke-linejoin="round" stroke-linecap="butt" d="m385.25198 283.9475l-106.83533 198.3937l-97.82611 -198.3937z" fill-rule="evenodd"/></g></svg>

src/html/img/glacier-nord.svg

@@ -0,0 +1 @@
+<svg version="1.1" viewBox="0.0 0.0 433.41207349081367 433.5275590551181" fill="none" stroke="none" stroke-linecap="square" stroke-miterlimit="10" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><clipPath id="p.0"><path d="m0 0l433.41208 0l0 433.52756l-433.41208 0l0 -433.52756z" clip-rule="nonzero"/></clipPath><g clip-path="url(#p.0)"><path fill="#000000" fill-opacity="0.0" d="m0 0l433.41208 0l0 433.52756l-433.41208 0z" fill-rule="evenodd"/><path fill="#88c0d0" d="m0 433.38583l392.89893 -433.38583l40.486908 0l-392.89893 433.38583z" fill-rule="evenodd"/><path fill="#88c0d0" d="m433.38583 433.38583l-392.89893 -433.38583l-40.486904 0l392.89893 433.38583z" fill-rule="evenodd"/><path fill="#5e81ac" d="m199.2126 0l34.960632 0l0 433.38583l-34.960632 0z" fill-rule="evenodd"/><path fill="#5e81ac" d="m433.38583 199.2126l0 34.960632l-433.38583 0l0 -34.960632z" fill-rule="evenodd"/></g></svg>

src/html/report_templ.html

@@ -5,34 +5,48 @@
 		<link type="text/css" rel="stylesheet" href="nord.css"/>
 	</head>
 	<body>
+		<div class="sidenav">
+			<img src="img/glacier-nord.svg" alt="glacier-logo">
+		</div>
+		<div class="main">
 		<h1>Packaging report: [DATE HERE]</h1>
 		<hr></hr>
 		<h2>Statistics</h2>
 		<p>Total transactions: [N_TRANSACTIONS]</p>
 		<p>Completed transactions: [N_COMP_TRANSACT]</p>
 		<p>Failed transactions: [N_FAIL_TRANSACT]</p>
-		<p>Writes performed to <code>/glacier/index</code>: [N_IND_WRITES]</p>
+		<bigcodehead><strong>Indices modified</strong></bigcodehead>
-		<hr></hr>
+		<div class="bigcode">
+			<p>f localhost:/glacier/usr/index/1000/mmddyyyy@hhmm</p>
+			<p>f 192.168.30.1:/glacier/usr/index/1000/mmddyyyy@hhmm</p>
+			<p>f 192.168.30.2:/glacier/usr/index/1000/mmddyyyy@hhmm</p>
+		</div>
 		<h2>Systems</h2>
-		<p>Performed these changes on the following systems:</p>
+		<bigcodehead><strong>Systems modified</strong></bigcodehead>
-		<code>
+		<div class="bigcode">
 			<p>* localhost</p>
 			<p>* 192.168.30.0/24</p>
-			<p>&emsp;&emsp;* 192.168.30.1</p>
+			<p>&emsp;&emsp;&emsp;&emsp;* 192.168.30.1</p>
-		</code>
+			<p>&emsp;&emsp;&emsp;&emsp;* 192.168.30.2</p>
-		<hr></hr>
+		</div>
 		<h2>Insights</h2>
 		<!--PACKAGE INSIGHTS BEGIN HERE-->
-		<p><strong>foo</strong><p>
+		<bigcodehead><strong>world::foo-1.0.1</strong></bigcodehead>
-		<p>1.0.0 ---&gt; 1.0.1</p>
+		<div class="bigcode">
-		<p>Files:</p>
+			<p>d localhost:/glacier/usr/store/1000/world::foo-1.0.1</p>
-		<code>
+			<p>d 192.168.30.1:/glacier/usr/store/1000/world::foo-1.0.1</p>
-		<p>f&emsp;&emsp;/usr/glacier/index/lw/pkginfo/foo_current/foo.gpm (e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855)<p>
+			<p>d 192.168.30.2:/glacier/usr/store/1000/world::foo-1.0.1</p>
-		<p>f&emsp;&emsp;usr/glacier/index/lw/pkgdata/foo_current/bin/foo (e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855)<p>
+		</div>
-		<p>l&emsp;&emsp;/home/lw/.glacier/store/foo -&gt; /usr/glacier/index/lw/pkgdata/foo_current<p>
+		<p></p>
-		</code>
+		<bigcodehead><strong>world::bar-2.3.5</strong></bigcodehead>
-		<hr>
+		<div class="bigcode">
+			<p>d localhost:/glacier/usr/store/1000/world::bar-2.3.5</p>
+			<p>d 192.168.30.1:/glacier/usr/store/1000/world::bar-2.3.5</p>
+			<p>d 192.168.30.2:/glacier/usr/store/1000/workd::bar-2.3.5</p>
+		</div>
 		<h2>Problems</h2>
+		<p>No problems to report.</p>
+		</div>
 
 	</body>
 </html>

src/istoreutils.c

@@ -0,0 +1,184 @@
+#include <errno.h>
+#include <linux/limits.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+#include "common.h"
+#include "log.h"
+#include "pkg.h"
+
+typedef enum
+{
+	INDEX,
+	STORE
+}
+index_store_t;
+
+static const dir_t usr_index = { "/glacier/usr/index", 0700 };
+static const dir_t sys_index = { "/glacier/sys/index", 0700 };
+
+static const dir_t usr_store = { "/glacier/usr/store", 0700 };
+static const dir_t sys_store = { "/glacier/sys/store", 0700 };
+
+bool
+gl_usr_istore_exists(index_store_t index_or_store, int uid)
+{
+	char path[PATH_MAX];
+	struct stat st;
+
+	switch (index_or_store) {
+	case INDEX:
+		snprintf(path, sizeof(path), "%s/%d", usr_index.path, uid);
+		break;
+	case STORE:
+		snprintf(path, sizeof(path), "%s/%d", usr_store.path, uid);
+		break;
+	default:
+		printf("libglacier: argument index_or_store of function gl_usr_istore_exists must be INDEX or STORE\n");
+		return NULL;
+	}
+
+	if (stat(path, &st) != 0) {
+		return false;
+	}
+
+	return S_ISDIR(st.st_mode);
+}
+
+bool
+gl_sys_istore_exists(index_store_t index_or_store)
+{
+	char path[PATH_MAX];
+	struct stat st;
+
+	switch (index_or_store) {
+	case INDEX:
+		snprintf(path, sizeof(path), "%s", sys_index.path);
+		break;
+	case STORE:
+		snprintf(path, sizeof(path), "%s", sys_store.path);
+		break;
+	default:
+		printf("libglacier: argument index_or_store of function gl_sys_istore_exists must be INDEX or STORE\n");
+		return NULL;
+	}
+
+	if (stat(path, &st) != 0) {
+		return false;
+	}
+
+	return S_ISDIR(st.st_mode);
+}
+
+int
+gl_init_user(int uid)
+{
+	if (uid < 1000) {
+		return 2;
+	}
+
+	char ind_path[PATH_MAX];
+	char sto_path[PATH_MAX];
+
+	snprintf(ind_path, sizeof(ind_path), "%s/%d", usr_index.path, uid);
+	snprintf(sto_path, sizeof(sto_path), "%s/%d", usr_store.path, uid);
+	
+	if (mkdir(ind_path, 0700) == -1) {
+		switch (errno) {
+		case EACCES:
+			lg_printf(2, "Cannot create index: permission denied");
+			return 1;
+			break;
+		case EEXIST:
+			lg_printf(2, "Cannot create index: directory already exists");
+			return 1;
+			break;
+		case ENOENT:
+			/* should never happen, but here for completeness */
+			lg_printf(2, "Cannot create index: parent directory does not exist");
+			return 1;
+			break;
+		case ENOSPC:
+			lg_printf(2, "Cannot create index: no space left on device");
+			return 1;
+			break;
+		case EROFS:
+			lg_printf(2, "Cannot create index: read only filesystem");
+			return 1;
+			break;
+		default:
+			printf("libglacier: mkdir error in function gl_init_user\n");
+			return -1;
+			break;
+		}
+	}
+
+	if (mkdir(sto_path, 0700) == -1) {
+		switch (errno) {
+		case EACCES:
+			lg_printf(2, "Cannot create store: permission denied");
+			return 1;
+			break;
+		case EEXIST:
+			lg_printf(2, "Cannot create store: directory already exists");
+			return 1;
+			break;
+		case ENOENT:
+			/* should never happen, but here for completeness */
+			lg_printf(2, "Cannot create store: parent directory does not exist");
+			return 1;
+			break;
+		case ENOSPC:
+			lg_printf(2, "Cannot create store: no space left on device");
+			return 1;
+			break;
+		case EROFS:
+			lg_printf(2, "Cannot create store: read only filesystem");
+			return 1;
+			break;
+		default:
+			printf("libglacier: mkdir error in function gl_init_user\n");
+			return -1;
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static void
+trim(char *s)
+{
+	char *p = s;
+	while (*p && isspace((unsigned char)*p)) {
+		p++;
+	}
+
+	if (p != s) {
+		memmove(s, p, strlen(p) + 1);
+	}
+
+	size_t len = strlen(s);
+	while (len && isspace((unsigned char)s[len - 1])) {
+		s[len--] = 0;
+	}
+}
+
+static char
+*dupstr(const char *s)
+{
+	size_t n = strlen(s);
+	char *p = malloc(n + 1);
+	if (!p) {
+		return NULL;
+	}
+
+	memcpy(p, s, n + 1);
+	return p;
+}
+
+int
+gl_parse_index(struct gindex *idx, FILE *f)
+{}

src/log.c

@@ -144,18 +144,18 @@ lg_gpkg_help(int argc, char *argv[])
 {
 	(void)argc;
 
-	printf("%s: Manage the user package index\n", argv[0]);
+	printf("%s: Install, update, and remove packages\n", argv[0]);
-	printf("usage: %s [-hv] [-fux PKG]\n", argv[0]);
+	printf("usage: %s [-hv] [-fux PKG] [-V]\n", argv[0]);
 	printf("\n");
-	printf("{-h}\tShow this message\n"
+	printf("%-25s %s\n", "{-h --help}", "Show this message");
-	       "{-v}\tShow the current version\n"
+	printf("%-25s %s\n", "{-v --version}", "Show the current version");
-	       "{-f} PKG...\tMerge a package into the user index\n"
+	printf("%-25s %s\n", "{-f --merge} PKG...", "Merge a package into the index and store");
-	       "{-u} PKG...\tUpgrade a merged package\n"
+	printf("%-25s %s\n", "{-u --update} PKG...", "Upgrade a merged package");
-	       "{-x} PKG...\tRemove a merged package\n"
+	printf("%-25s %s\n", "{-x --remove} PKG...", "Remove a package from the index and store");
-	       "\n"
+	printf("%-25s %s\n", "{-V --verbose}", "Log events more verbosely");
-	       "This program is free software.\n"
+	printf("\n");
-	       "See the GNU GPL version 3 for details.\n"
+	printf("This program is free software.\n");
-	);
+	printf("See the GNU GPL version 3 for details.\n");
 }
 
 void
@@ -177,18 +177,21 @@ lg_syspkg_help(int argc, char *argv[])
 	);
 }
 
-int
+void
-main(int argc, char *argv[])
+lg_gstore_help(int argc, char *argv[])
 {
-	lg_gpkg_help(argc, argv);
+	(void)argc;
-	lg_syspkg_help(argc, argv);
-	lg_printf(LG_INFO, "info");
-	lg_printf(LG_WARN, "warning");
-	lg_printf(LG_ERR, "error");
-	lg_printf(LG_SUCCESS, "success");
 
-	lg_log(true, "./glacier.log", LOG_INFO, "Glacier started with PID %d", 12345);
+	printf("%s: Manage Glacier packages indexes/stores\n", argv[0]);
-	lg_log(true, "./glacier.log", LOG_ERR, "Failed to install package %s", "glibc");
+	printf("usage: %s [-hv] [-snx UID] [-V]\n", argv[0]);
-
+	printf("\n");
-	return 0;
+	printf("%-25s %s\n", "{-h --help}", "Show this message");
+	printf("%-25s %s\n", "{-v --version}", "Show the current version");
+	printf("%-25s %s\n", "{-s --sync} UID", "Sync UID's store with their index");
+	printf("%-25s %s\n", "{-n --new} UID", "Create new store and index for UID");
+	printf("%-25s %s\n", "{-x --delete} UID", "Delete UID's store and index");
+	printf("%-25s %s\n", "{-V --verbose}", "Log events more verbosely");
+	printf("\n");
+	printf("This program is free software.\n");
+	printf("See the GNU GPL version 3 for details.\n");
 }

src/pkg.c

@@ -3,12 +3,14 @@
 
 #include <errno.h>
 #include <libconfig.h>
+#include <limits.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 #include "common.h"
 
@@ -80,6 +82,24 @@ static const dir_t gl_sys_store = { "/glacier/sys/store", 0700 };
 static dep_t null_dep = { "null", {-1, -1, -1, NULL} };
 static conf_t null_conf = { "null", {-1, -1, -1, NULL} };
 
+static char
+*join_with_cwd(const char *path)
+{
+	char cwd[PATH_MAX];
+
+	if (!getcwd(cwd, sizeof(cwd))) {
+		perror("getcwd");
+		return NULL;
+	}
+
+	size_t length = strlen(cwd + strlen(path) + 2);
+	char *result = malloc(length);
+	if (!result) { return NULL; }
+
+	snprintf(result, length, "%s/%s", cwd, path);
+	return result;
+}
+
 /*
  * gl_pkgver
  * DESCRIPTION: takes three integers and formats them as a semver_t struct
@@ -119,7 +139,7 @@ gl_parse_semver(const char *str)
 }
 
 void
-gl_free_semver(semver_T *v)
+gl_free_semver(semver_t *v)
 {
 	if (v && v->tag) { free (v->tag); };
 }
@@ -164,7 +184,7 @@ gl_pkg_t
 }
 
 int
-gl_gpm2pkg(const char *filename, gl_pkg_t *pkg)
+gl_gpm2gpkg(const char *filename, gl_pkg_t *pkg)
 {
 	config_t cfg;
 	config_setting_t *deps, *confs;
@@ -179,7 +199,7 @@ gl_gpm2pkg(const char *filename, gl_pkg_t *pkg)
 	if (config_lookup_string(&cfg, "PKG_NAME", &tmp_str)) { pkg->pkg_name = strdup(tmp_str); }
 	if (config_lookup_string(&cfg, "PKG_DESC", &tmp_str)) { pkg->pkg_desc = strdup(tmp_str); }
 	if (config_lookup_string(&cfg, "PKG_MAINT", &tmp_str)) { pkg->pkg_maint = strdup(tmp_str); }
-	if (config_lookup_string(&cfg, "PKG_COPYRIGHT", &tmp_str)) { pkg->pkg_copyright = strup(tmp_str); }
+	if (config_lookup_string(&cfg, "PKG_COPYRIGHT", &tmp_str)) { pkg->pkg_copyright = strdup(tmp_str); }
 	if (config_lookup_string(&cfg, "PKG_VER", &tmp_str)) { pkg->pkg_ver = gl_parse_semver(tmp_str); }
 
 	deps = config_lookup(&cfg, "PKG_DEPS");
@@ -196,7 +216,7 @@ gl_gpm2pkg(const char *filename, gl_pkg_t *pkg)
 			config_setting_lookup_string(d, "PKG_VER", &dep_ver);
 
 			pkg->pkg_dependencies[i].dep_name = dep_name ? strdup(dep_name) : NULL;
-			pkg->pkg_dependencies[i].dep_ver = parse_semver(dep_ver);
+			pkg->pkg_dependencies[i].dep_ver = gl_parse_semver(dep_ver);
 		}
 	}
 
@@ -214,7 +234,7 @@ gl_gpm2pkg(const char *filename, gl_pkg_t *pkg)
 			config_setting_lookup_string(c, "PKG_VER", &conf_ver);
 
 			pkg->pkg_conflicts[i].conf_name = conf_name ? strdup(conf_name) : NULL;
-			pkg->pkg_conflicts[i].conf_ver = parse_semver(conf_ver);
+			pkg->pkg_conflicts[i].conf_ver = gl_parse_semver(conf_ver);
 		}
 	}
 
@@ -280,6 +300,35 @@ gl_free_dir(dir_t *dir)
 	}
 }
 
+void
+gl_free_pkg(gl_pkg_t *pkg)
+{
+	if (!pkg) return;
+
+	free(pkg->pkg_name);
+	free(pkg->pkg_desc);
+	free(pkg->pkg_maint);
+	free(pkg->pkg_copyright);
+
+	gl_free_semver(&pkg->pkg_ver);
+
+	if (pkg->pkg_dependencies) {
+		for (dep_t *d = pkg->pkg_dependencies; d->dep_name; d++) {
+			free(d->dep_name);
+			gl_free_semver(&d->dep_ver);
+		}
+		free(pkg->pkg_dependencies);
+	}
+
+	if (pkg->pkg_conflicts) {
+		for (conf_t *c = pkg->pkg_conflicts; c->conf_name; c++) {
+			free(c->conf_name);
+			gl_free_semver(&c->conf_ver);
+		}
+		free(pkg->pkg_conflicts);
+	}
+}
+
 int
 gl_prepare_pkgdir(gl_pkg_t *pkg, bool is_syspkg)
 {
@@ -364,6 +413,16 @@ main(void)
 	gl_show_pkg_props(foo);
 	gl_show_pkg_props(&empty);
 
+	gl_pkg_t bar = {0};
+
+	char *bar_path = join_with_cwd("bar.gpm.cfg");
+	if (!bar_path) { return 1; }
+
+	if (gl_gpm2gpkg(bar_path, &bar) == 0) { gl_show_pkg_props(&bar); }
+	else { return 99; }
+
+	free(bar_path);
+
 	if (gl_prepare_pkgdir(foo, false) == 0) {
 		printf("Package prepared\n");
 		return 0;
@@ -371,4 +430,7 @@ main(void)
 	else {
 		return 1;
 	}
+
+	gl_free_pkg(foo);
+	gl_free_pkg(&bar);
 }

src/pkg.h

@@ -0,0 +1,84 @@
+#ifndef PKG_H_
+#define PKG_H_
+
+#define _POSIX_C_SOURCE 200809L
+#define _XOPEN_SOURCE 700
+
+#include <libconfig.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/stat.h>
+
+#include "common.h"
+
+typedef struct {
+	int maj;
+	int min;
+	int pat;
+	char *tag;
+}
+semver_t;
+
+typedef struct {
+	char *dep_name;
+	semver_t dep_ver;
+}
+dep_t;
+
+typedef struct {
+	char *conf_name;
+	semver_t conf_ver;
+}
+conf_t;
+
+typedef struct {
+	char *pkg_name;
+	semver_t pkg_ver;
+	char *pkg_desc;
+	char *pkg_maint;
+	char *pkg_copyright;
+	dep_t *pkg_dependencies;
+	conf_t *pkg_conflicts;
+}
+gl_pkg_t;
+
+extern const dir_t gl_root;
+
+extern const dir_t gl_usr;
+extern const dir_t gl_usr_index;
+extern const dir_t gl_usr_store;
+
+extern const dir_t gl_sys;
+extern const dir_t gl_sys_index;
+extern const dir_t gl_sys_store;
+
+extern dep_t null_dep;
+extern conf_t null_conf;
+extern gl_pkg_t empty;
+
+semver_t gl_pkgver(int major, int minor, int patch);
+semver_t gl_parse_semver(const char *str);
+void gl_free_semver(semver_t *v);
+
+gl_pkg_t *gl_spawn_pkg(
+		char *name, semver_t *ver, char *desc,
+		char *maint, char *copy, dep_t *dep,
+		conf_t conf
+);
+
+void gl_show_pkg_props(const gl_pkg_t *pkg);
+void gl_free_pkg(gl_pkg_t *pkg);
+
+int gl_mkdir(dir_t *dir);
+char *gl_cat_dir(const dir_t *a, const dir_t *b);
+char *gl_cat_dir_and_ver(const dir_t *base, const gl_pkg_t *pkg);
+dir_t gl_return_dir(const dir_t *a, const dir_t *b, mode_t mode);
+dir_t gl_return_dir_and_ver(const dir_t *base, gl_pkg_t *pkg, mode_t mode);
+void gl_free_path(char *path);
+void gl_free_dir(dir_t *dir);
+
+int gl_gpm2gpkg(const char *filename, gl_pkg_t pkg);
+int gl_prepare_pkgdir(gl_pkg_t *pkg, bool is_syspkg);
+char *join_with_cwd(const char *path);
+
+#endif

src/pkg.hpp

@@ -1 +0,0 @@
-#ifndef

src/test_deps.c

@@ -0,0 +1,2 @@
+#include "dag.h"
+#include