From b75c1ec41abb411423218895205395e8cb191be2 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sat, 3 Apr 2021 15:02:18 +0200
Subject: Add photo utils
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 .gitignore              |   3 +
 Makefile                |  12 +++
 TODO                    |   5 +-
 find-contact-by-photo.c |  52 +++++++++++
 get-contact-photos.c    |  88 ++++++++++++++++++
 set-contact-photos.c    | 236 ++++++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 394 insertions(+), 2 deletions(-)
 create mode 100644 find-contact-by-photo.c
 create mode 100644 get-contact-photos.c
 create mode 100644 set-contact-photos.c

diff --git a/.gitignore b/.gitignore
index 7e17692..67e3b03 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,7 @@
 /find-contact-by-name
 /find-contact-by-organisation
 /find-contact-by-pgpkey
+/find-contact-by-photo
 /find-contact-by-site
 /get-contact-emails
 /get-contact-file
@@ -22,6 +23,7 @@
 /get-contact-notes
 /get-contact-organisations
 /get-contact-pgpkeys
+/get-contact-photos
 /get-contact-sites
 /is-contact-ice
 /list-contact-groups
@@ -37,4 +39,5 @@
 /set-contact-notes
 /set-contact-organisations
 /set-contact-pgpkeys
+/set-contact-photos
 /set-contact-sites
diff --git a/Makefile b/Makefile
index 33efd3d..347cb54 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,7 @@ BIN =\
 	find-contact-by-name\
 	find-contact-by-organisation\
 	find-contact-by-pgpkey\
+	find-contact-by-photo\
 	find-contact-by-site\
 	get-contact-emails\
 	get-contact-file\
@@ -18,6 +19,7 @@ BIN =\
 	get-contact-notes\
 	get-contact-organisations\
 	get-contact-pgpkeys\
+	get-contact-photos\
 	get-contact-sites\
 	is-contact-ice\
 	list-contact-groups\
@@ -33,6 +35,7 @@ BIN =\
 	set-contact-notes\
 	set-contact-organisations\
 	set-contact-pgpkeys\
+	set-contact-photos\
 	set-contact-sites
 
 HDR =\
@@ -73,6 +76,9 @@ find-contact-by-organisation: find-contact-by-organisation.o
 find-contact-by-pgpkey: find-contact-by-pgpkey.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
+find-contact-by-photo: find-contact-by-photo.o
+	$(CC) -o $@ $@.o $(LDFLAGS)
+
 find-contact-by-site: find-contact-by-site.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
@@ -100,6 +106,9 @@ get-contact-organisations: get-contact-organisations.o
 get-contact-pgpkeys: get-contact-pgpkeys.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
+get-contact-photos: get-contact-photos.o
+	$(CC) -o $@ $@.o $(LDFLAGS)
+
 get-contact-sites: get-contact-sites.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
@@ -145,6 +154,9 @@ set-contact-organisations: set-contact-organisations.o
 set-contact-pgpkeys: set-contact-pgpkeys.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
+set-contact-photos: set-contact-photos.o
+	$(CC) -o $@ $@.o $(LDFLAGS)
+
 set-contact-sites: set-contact-sites.o
 	$(CC) -o $@ $@.o $(LDFLAGS)
 
diff --git a/TODO b/TODO
index 992e7b8..7fe8575 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,3 @@
-Add tools for .photos
 Add tools for .blocks
 Add tools for .numbers
 Add tools for .addresses
@@ -9,12 +8,13 @@ Test find-contact-by-email
 Test find-contact-by-name
 Test find-contact-by-organisation
 Test find-contact-by-pgpkey
+Test find-contact-by-photo
 Test find-contact-by-site
 Test get-contact-emails
-Test get-contact-groups
 Test get-contact-name
 Test get-contact-organisations
 Test get-contact-pgpkeys
+Test get-contact-photos
 Test get-contact-sites
 Test list-contact-organisations
 Test list-organisation-contacts
@@ -23,6 +23,7 @@ Test set-contact-groups
 Test set-contact-name
 Test set-contact-organisations
 Test set-contact-pgpkeys
+Test set-contact-photos
 Test set-contact-sites
 Add man pages
 Add readme
diff --git a/find-contact-by-photo.c b/find-contact-by-photo.c
new file mode 100644
index 0000000..46c14ed
--- /dev/null
+++ b/find-contact-by-photo.c
@@ -0,0 +1,52 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("-L | photo");
+
+
+int
+main(int argc, char *argv[])
+{
+	int list = 0;
+	struct passwd *user;
+	struct libcontacts_contact **contacts;
+	char **photos, *photo;
+	size_t i;
+
+	ARGBEGIN {
+	case 'L':
+		list = 1;
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc != 1 - list)
+		usage();
+
+	errno = 0;
+	user = getpwuid(getuid());
+	if (!user)
+		eprintf("getpwuid: %s\n", errno ? strerror(errno) : "user does not exist");
+
+	if (libcontacts_load_contacts(&contacts, user))
+		eprintf("libcontacts_load_contacts:");
+	for (i = 0; contacts[i]; i++) {
+		if ((photos = contacts[i]->photos)) {
+			for (; (photo = *photos); photos++) {
+				if (list)
+					printf("%s (%s)\n", contacts[i]->id, photo);
+				else if (!strcmp(photo, argv[0]))
+					printf("%s\n", contacts[i]->id);
+			}
+		}
+		libcontacts_contact_destroy(contacts[i]);
+		free(contacts[i]);
+	}
+	free(contacts);
+
+	if (fflush(stdout) || ferror(stdout) || fclose(stdout))
+		eprintf("printf:");
+
+	return 0;
+}
diff --git a/get-contact-photos.c b/get-contact-photos.c
new file mode 100644
index 0000000..3b44393
--- /dev/null
+++ b/get-contact-photos.c
@@ -0,0 +1,88 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("[-a] contact-id ...");
+
+
+int
+main(int argc, char *argv[])
+{
+	int absolute_path = 0;
+	struct passwd *user;
+	struct libcontacts_contact contact;
+	const char *slash = "";
+	char **photos, **r, **w;
+	size_t i;
+
+	ARGBEGIN {
+	case 'a':
+		absolute_path = 1;
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (!argc)
+		usage();
+
+	for (i = 0; argv[i]; i++)
+		if (!*argv[i] || strchr(argv[i], '/'))
+			usage();
+
+	errno = 0;
+	user = getpwuid(getuid());
+	if (!user)
+		eprintf("getpwuid: %s\n", errno ? strerror(errno) : "user does not exist");
+
+	if (libcontacts_load_contact(*argv, &contact, user))
+		eprintf("libcontacts_load_contact %s: %s\n", *argv, errno ? strerror(errno) : "contact file is malformatted");
+	photos = contact.photos;
+	contact.photos = NULL;
+	libcontacts_contact_destroy(&contact);
+	if (!photos || !*photos) {
+		free(photos);
+		return 0;
+	}
+
+	for (; *argv; argv++) {
+		if (libcontacts_load_contact(*argv, &contact, user))
+			eprintf("libcontacts_load_contact %s: %s\n", *argv, errno ? strerror(errno) : "contact file is malformatted");
+		if (!contact.photos) {
+			libcontacts_contact_destroy(&contact);
+			for (i = 0; photos[i]; i++)
+				free(photos[i]);
+			free(photos);
+			return 0;
+		}
+		for (w = r = photos; *r; r++) {
+			for (i = 0; contact.photos[i]; i++)
+				if (!strcmp(contact.photos[i], *r))
+					break;
+			if (!contact.photos[i])
+				free(*r);
+			else
+				*w++ = *r;
+		}
+		*w = NULL;
+		libcontacts_contact_destroy(&contact);
+		if (!*photos) {
+			free(photos);
+			return 0;
+		}
+	}
+
+	if (absolute_path && strchr(user->pw_dir, '\0')[-1] != '/')
+		slash = "/";
+	for (i = 0; photos[i]; i++) {
+		if (photos[i][0] != '/' && absolute_path)
+			printf("%s%s%s\n", user->pw_dir, slash, photos[i]);
+		else if (photos[i][0])
+			printf("%s\n", photos[i]);
+		free(photos[i]);
+	}
+	free(photos);
+
+	if (fflush(stdout) || ferror(stdout) || fclose(stdout))
+		eprintf("printf:");
+	return 0;
+}
diff --git a/set-contact-photos.c b/set-contact-photos.c
new file mode 100644
index 0000000..9c62d24
--- /dev/null
+++ b/set-contact-photos.c
@@ -0,0 +1,236 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("[-ru] contact-id ... photo");
+
+
+static char *
+get_target(const char *path, size_t *lenp)
+{
+	char *target = NULL;
+	size_t size = 0;
+	ssize_t n = 0;
+
+        do {
+                if ((size_t)n == size)
+                        target = erealloc(target, size += 512);
+                n = readlink(path, target, size);
+                if (n < 0)
+			eprintf("readlink %s:", path);
+        } while ((size_t)n >= size);
+
+	*lenp = (size_t)n;
+	target[n] = '\0';
+
+	return target;
+
+}
+
+static char *
+get_absolute_path(const char *path, const char *cwd)
+{
+	char *ret, *r, *w, *target, *new;
+	size_t len1, len2, len3, targetlen, retlennul, looplimit = 64;
+
+	if (path[0] == '/') {
+		retlennul = strlen(path) + 1;
+		ret = emalloc(retlennul);
+		memcpy(ret, path, retlennul);
+	} else {
+		len1 = strlen(path);
+		len2 = strlen(cwd);
+		retlennul = len1 + len2 + 2;
+		ret = emalloc(retlennul);
+		memcpy(ret, path, len1);
+		ret[len1++] = '/';
+		memcpy(&ret[len1], cwd, ++len2);
+	}
+
+again:
+	for (w = r = ret; *r;) {
+		if (r[0] == '/' && (r[1] == '/' || !r[1])) {
+			r += 1;
+		} else if (r[0] == '/' && r[1] == '.' && (r[2] == '/' || !r[2])) {
+			r += 2;
+		} else if (r[0] == '/' && r[1] == '.' && r[2] == '.' && (r[3] == '/' || !r[3])) {
+			*w = '\0';
+			target = get_target(ret, &targetlen);
+			if (!target) {
+				while (w[-1] != '/')
+					w--;
+				r += 3;
+			} else if (!target[0]) {
+				eprintf("%s: encountered symlink with empty target\n", path);
+			} else if (target[0] == '/') {
+				if (!looplimit--) {
+					errno = ELOOP;
+					eprintf("%s:", path);
+				}
+				len1 = targetlen;
+				len2 = retlennul - (size_t)(r - ret);
+				retlennul = len1 + len2;
+				new = emalloc(retlennul);
+				memcpy(new, target, len1);
+				memcpy(&new[len1], r, len2);
+				free(ret);
+				ret = new;
+				free(target);
+				goto again;
+			} else {
+				if (!looplimit--) {
+					errno = ELOOP;
+					eprintf("%s:", path);
+				}
+				while (w[-1] != '/')
+					w--;
+				len1 = (size_t)(w - ret);
+				len2 = targetlen;
+				len3 = retlennul - (size_t)(r - ret);
+				retlennul = len1 + len2 + len3;
+				new = emalloc(retlennul);
+				memcpy(new, ret, len1);
+				memcpy(&new[len1], target, len2);
+				memcpy(&new[len1 + len2], r, len3);
+				free(ret);
+				ret = new;
+				r = w = &ret[len1];
+				free(target);
+			}
+		} else {
+			*w++ = *r++;
+		}
+	}
+
+	*w = '\0';
+	if (!*ret) {
+		ret[0] = '/';
+		ret[1] = '\0';
+	}
+	return ret;
+}
+
+static const char *
+get_cwd(char **free_this)
+{
+        char *cwd = NULL;
+        size_t size = 64 / 2;
+        int saved_errno = errno;
+        const char *pwd;
+	struct stat cst, pst;
+
+        *free_this = NULL;
+	for (;;) {
+                cwd = erealloc(*free_this, size *= 2);
+                *free_this = cwd;
+		if (getcwd(cwd, size))
+                        break;
+                if (errno != ERANGE)
+			eprintf("getcwd %zu:", size);
+        }
+
+        errno = saved_errno;
+        if (!(pwd = getenv("PWD")) || *pwd != '/' || stat(pwd, &pst) || stat(cwd, &cst))
+                return cwd;
+
+	if (pst.st_dev == cst.st_dev && pst.st_ino == cst.st_ino) {
+		free(*free_this);
+		*free_this = NULL;
+		return pwd;
+	}
+        return cwd;
+}
+
+int
+main(int argc, char *argv[])
+{
+	int remove = 0, as_is = 0;
+	struct passwd *user;
+	struct libcontacts_contact contact;
+	char *photo, **r, **w, *newpath = NULL, *home, *cwd_free;
+	const char *cwd;
+	int ret = 0;
+	size_t i, len;
+
+	ARGBEGIN {
+	case 'r':
+		as_is = 1;
+		break;
+	case 'u':
+		remove = 1;
+		as_is = 1;
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc < 2)
+		usage();
+
+	photo = argv[--argc];
+	argv[argc] = NULL;
+
+	for (i = 0; argv[i]; i++)
+		if (!*argv[i] || strchr(argv[i], '/'))
+			usage();
+
+	errno = 0;
+	user = getpwuid(getuid());
+	if (!user)
+		eprintf("getpwuid: %s\n", errno ? strerror(errno) : "user does not exist");
+
+	if (!as_is && user->pw_dir && user->pw_dir[0] == '/' && photo[0] != '/') {
+		cwd = get_cwd(&cwd_free);
+		if (cwd[0] != '/')
+			abort();
+		newpath = get_absolute_path(photo, cwd);
+		home = get_absolute_path(user->pw_dir, cwd);
+		free(cwd_free);
+		len = strlen(home);
+		if (!strncmp(newpath, home, len) && newpath[len] == '/')
+			photo = &newpath[len + 1];
+		else
+			photo = newpath;
+		free(home);
+	}
+
+	for (; *argv; argv++) {
+		if (libcontacts_load_contact(*argv, &contact, user)) {
+			weprintf("libcontacts_load_contact %s: %s\n", *argv, errno ? strerror(errno) : "contact file is malformatted");
+			ret = 1;
+			continue;
+		}
+		if (contact.photos) {
+			for (i = 0; contact.photos[i]; i++)
+				if (!strcmp(contact.photos[i], photo))
+					break;
+			r = &contact.photos[i];
+			if (remove && *r) {
+				free(*r);
+				for (w = r++; *r;)
+					*w++ = *r++;
+				*w = NULL;
+				if (libcontacts_save_contact(&contact, user)) {
+					weprintf("libcontacts_save_contact %s:", *argv);
+					ret = 1;
+				}
+			} else if (!remove && !*r) {
+				goto add_photo;
+			}
+		} else if (!remove) {
+			i = 0;
+		add_photo:
+			contact.photos = erealloc(contact.photos, (i + 2) * sizeof(*contact.photos));
+			contact.photos[i + 1] = NULL;
+			contact.photos[i] = photo;
+			if (libcontacts_save_contact(&contact, user)) {
+				weprintf("libcontacts_save_contact %s:", *argv);
+				ret = 1;
+			}
+			contact.photos[i] = NULL;
+		}
+		libcontacts_contact_destroy(&contact);
+	}
+
+	free(newpath);
+	return ret;
+}
-- 
cgit v1.2.3-70-g09d2