pass/ls: init

5 files changed, 261 insertions, 5 deletions

diff --git a/README.md b/README.md
index 14b85f6..410b608 100644
--- a/README.md
+++ b/README.md
@@ -8,9 +8,9 @@ section.
 
 Todo
 ----
-- [ ] cmdline
+- [x] cmdline
     - [x] pass init
-    - [ ] pass ls
+    - [x] pass ls
     - [x] pass rm
     - [x] pass add
     - [x] pass gen
diff --git a/include/libnpass/libnpass.h b/include/libnpass/libnpass.h
index ac7423a..130954d 100644
--- a/include/libnpass/libnpass.h
+++ b/include/libnpass/libnpass.h
@@ -1,4 +1,6 @@
 #include <stdio.h>
+#include <dirent.h>
+#include <linux/limits.h>
 
 typedef enum {
 	PASS_GEN_DIGIT = 0,
@@ -6,6 +8,24 @@ typedef enum {
 	PASS_GEN_GRAPH = 2,
 } pass_gen_t;
 
+typedef enum {
+	PASS_STORE_DIR = 0,
+	PASS_STORE_ENC = 1,
+	PASS_STORE_INV = 2,
+} pass_store_t;
+
+struct store {
+	char          name[NAME_MAX];
+	pass_store_t  type;
+};
+
+DIR *openstore(const char *spath);
+int readstore(DIR *dirp, struct store *s);
+int readstore_all(const char *path, struct store **stor);
+
+pass_store_t pass_store_type(const char *spath);
+int pass_store_cmp(const void *vp1, const void *vp2);
+
 int pass_init(const char *fpr);
 int pass_cat(FILE *out, const char *path);
 int pass_add(const char *path, const char *pass, size_t n);
diff --git a/meson.build b/meson.build
index ff77d19..0384579 100644
--- a/meson.build
+++ b/meson.build
@@ -12,6 +12,7 @@ project(
 add_project_arguments(
 	[
 		'-D_POSIX_C_SOURCE=200809L',
+		'-D_DEFAULT_SOURCE',
 		'-Wvla',
 	],
 	language: 'c',
diff --git a/src/libnpass/libnpass.c b/src/libnpass/libnpass.c
index aa1a285..37fc40c 100644
--- a/src/libnpass/libnpass.c
+++ b/src/libnpass/libnpass.c
@@ -7,6 +7,7 @@
 #include <libgen.h>
 #include <termios.h>
 #include <stdio.h>
+#include <dirent.h>
 
 #include "libnpass/libnpass.h"
 #include "libnpass/gpg.h"
@@ -14,8 +15,8 @@
 
 #include "util.h"
 
-#define DEF_PASS_DIR	"pass"
-#define FPR_MAX		256
+#define DEF_PASS_DIR  "pass"
+#define FPR_MAX       NAME_MAX
 
 static char pass_dir[PATH_MAX] = {0};
 const char *pass_gen_set[] = {
@@ -32,6 +33,7 @@ const char *pass_gen_set[] = {
 };
 
 int set_pass_dir(void);
+int is_storeobj(struct dirent *dir);
 
 int set_pass_dir(void) {
 	const char *env;
@@ -59,6 +61,170 @@ int set_pass_dir(void) {
 	return 1;
 }
 
+int pass_store_cmp(const void *vp1, const void *vp2) {
+	struct store *sp1, *sp2;
+
+	sp1 = (struct store *) vp1;
+	sp2 = (struct store *) vp2;
+	return strcmp(sp1->name, sp2->name);
+}
+
+int is_storeobj(struct dirent *dir) {
+	int r;
+	char *s;
+
+	switch (dir->d_type) {
+	case DT_DIR:
+		r = strcmp(dir->d_name, ".");
+		if (r)
+			r = strcmp(dir->d_name, "..");
+
+		return r;
+		break;
+	case DT_REG:
+		s = strrchr(dir->d_name, '.');
+		if (!s)
+			return 0;
+
+		r = strcmp(s, ".gpg");
+		return (r == 0);
+		break;
+	default:
+		return 0;
+		break;
+	}
+}
+
+pass_store_t pass_store_type(const char *spath) {
+	int r;
+	struct stat sbuf;
+	char abs_path[PATH_MAX];
+
+	r = set_pass_dir();
+	if (r)
+		err_ret(PASS_STORE_INV, "PASSWORD_STORE_DIR not set");
+
+	r = snprintf(abs_path, sizeof(abs_path) - 1, "%s/%s",
+	    pass_dir, spath);
+	if (r >= (int) sizeof(abs_path))
+		err_ret(PASS_STORE_INV, "path exceeded PATH_MAX");
+	r = stat(abs_path, &sbuf);
+	if (!r && (sbuf.st_mode & S_IFMT) == S_IFDIR)
+		return PASS_STORE_DIR;
+
+	r = snprintf(abs_path, sizeof(abs_path) - 1, "%s/%s.gpg",
+	    pass_dir, spath);
+	if (r >= (int) sizeof(abs_path))
+		err_ret(PASS_STORE_INV, "path exceeded PATH_MAX");
+	r = stat(abs_path, &sbuf);
+	if (r)
+		err_ret(PASS_STORE_INV, "%s", strerror(errno));
+
+	if ((sbuf.st_mode & S_IFMT) == S_IFREG) {
+		return PASS_STORE_ENC;
+	} else {
+		err_ret(PASS_STORE_INV, "%s is not a regular file", abs_path);
+	}
+}
+
+DIR *openstore(const char *spath) {
+	int r;
+	DIR *d;
+	const char *path;
+	char abs_path[PATH_MAX];
+
+	r = set_pass_dir();
+	if (r)
+		err_ret(NULL, "PASSWORD_STORE_DIR not set");
+
+	if (spath) {
+		r = snprintf(abs_path, sizeof(abs_path) - 1, "%s/%s",
+	            pass_dir, spath);
+		if (r >= (int) sizeof(abs_path))
+			err_ret(NULL, "path exceeded PATH_MAX");
+
+		path = abs_path;
+	} else {
+		path = pass_dir;
+	}
+
+	d = opendir(path);
+	if (!d)
+		err_ret(NULL, "%s", strerror(errno));
+
+	return d;
+}
+
+int readstore(DIR *dirp, struct store *s) {
+	struct dirent *dir;
+
+	errno = 0;
+
+	while ((dir = readdir(dirp))) {
+		if (is_storeobj(dir))
+			break;
+	}
+
+	if (!dir) {
+		if (errno != 0)
+			err_ret(1, "%s", strerror(errno));
+
+		return EOF;
+	}
+
+	strncpy(s->name , dir->d_name, sizeof(s->name));
+	switch (dir->d_type) {
+	case DT_DIR:
+		s->type = PASS_STORE_DIR;
+		break;
+	case DT_REG:
+		/* this is safe since is_storeobj()
+		 * rejects files without .gpg suffix */
+		*(strrchr(s->name, '.')) = '\0';
+		s->type = PASS_STORE_ENC;
+		break;
+	default:
+		s->type = PASS_STORE_INV;
+		break;
+	}
+
+	return 0;
+}
+
+int readstore_all(const char *path, struct store **stor) {
+	int r;
+	void *p;
+	size_t i;
+	DIR *dirp;
+	size_t len = PATH_MAX;
+
+	*stor = malloc(sizeof(struct store) * len);
+	if (!*stor)
+		err_ret(-1, "%s", strerror(errno));
+
+	dirp = openstore(path);
+	if (!dirp) {
+		free(*stor);
+		return -1;
+	};
+
+	for (i = 0; !(r = readstore(dirp, *stor + i)); i++) {
+		if (i < len - 1)
+			continue;
+
+		len *= 2;
+		p = realloc(*stor, sizeof(**stor) * len);
+		if (!p) {
+			free(*stor);
+			err_ret(-1, "%s", strerror(errno));
+		} else {
+			*stor = p;
+		}
+	}
+
+	return i;
+}
+
 int pass_init(const char *fpr)
 {
 	int r;
diff --git a/src/npass/npass.c b/src/npass/npass.c
index a055317..0b5f792 100644
--- a/src/npass/npass.c
+++ b/src/npass/npass.c
@@ -7,12 +7,22 @@
 #include "libnpass/libnpass.h"
 #include "util.h"
 
-#define invalid_usage_err_ret() err_ret(1, "invalid usage, try pass help")
+#define invalid_usage_err_ret() \
+	err_ret(1, "invalid usage, try pass help")
+
+#define BLUE	"\e[0;34m"
+#define NCOL	"\e[0m"
+
+typedef enum {
+	DEPTH_ITS_OVER = 0,
+	DEPTH_NOT_OVER = 1,
+} depth_state_t;
 
 void print_usage(void);
 int cat(const char *path);
 int add(const char *path);
 int gen(int argc, char *argv[]);
+int ls(const char *path, size_t depth, depth_state_t *depth_state);
 
 void print_usage(void)
 {
@@ -46,6 +56,60 @@ int cat(const char *path)
 	return  r;
 }
 
+int ls(const char *path, size_t depth, depth_state_t *depth_state) {
+	void *p;
+	char *prefix;
+	int i, j, len;
+	struct store *stor;
+	char new_path[PATH_MAX];
+	static size_t depth_state_len = NAME_MAX;
+
+	len = readstore_all(path, &stor);
+	if (len < 0)
+		return 1;
+
+	if (!depth) {
+		depth_state = malloc(sizeof(depth_state_t) * depth_state_len);
+		puts((path) ? path : "Password Store");
+	} else if (depth == depth_state_len - 1) {
+		depth_state_len *= 2;
+		p = realloc(stor, sizeof(depth_state[0]) * len);
+		if (!p)
+			err_ret(1, "%s", strerror(errno));
+		depth_state = p;
+	}
+
+	qsort(stor, len, sizeof(stor[0]), pass_store_cmp);
+	for (i = 0; i < len; i++) {
+		if (i == len - 1) {
+			prefix = "└──";
+			depth_state[depth] = DEPTH_ITS_OVER;
+		} else {
+			prefix = "├──";
+			depth_state[depth] = DEPTH_NOT_OVER;
+		}
+
+		for (j = 0; (size_t) j < depth; j++)
+			printf("%s   ", (depth_state[j]) == DEPTH_ITS_OVER ? " " : "│");
+
+		if (stor[i].type == PASS_STORE_DIR) {
+			printf("%s %s%s%s\n", prefix, BLUE, stor[i].name, NCOL);
+
+			snprintf(new_path, sizeof(new_path) - 1, "%s/%s",
+				(path) ? path : "", stor[i].name);
+			ls(new_path, depth + 1, depth_state);
+		} else {
+			printf("%s %s\n", prefix, stor[i].name);
+		}
+	}
+
+	if (!depth)
+		free(depth_state);
+	free(stor);
+
+	return 0;
+}
+
 int add(const char *path)
 {
 	char *p1 = NULL, *p2 = NULL;
@@ -153,6 +217,11 @@ int main(int argc, char *argv[])
 			invalid_usage_err_ret();
 
 		r = pass_init(argv[1]);
+	} else if (!strcmp("ls", *argv)) {
+		if (argc > 2)
+			invalid_usage_err_ret();
+
+		r = ls(argv[1], 0, NULL);
 	} else if (!strcmp("cat", *argv)) {
 		if (argc != 2)
 			invalid_usage_err_ret();