From 82415055670a67d64ac2223815d6c15245fe60c5 Mon Sep 17 00:00:00 2001 From: Siguza Date: Sun, 13 Jan 2019 02:28:35 +0100 Subject: [PATCH] Initial commit --- .gitignore | 2 + LICENSE | 373 +++++++++++++++++++++++++++++++++++++++++++++++++++ Makefile | 14 ++ README.md | 26 ++++ src/common.c | 97 ++++++++++++++ src/common.h | 27 ++++ src/db.c | 302 +++++++++++++++++++++++++++++++++++++++++ src/db.h | 29 ++++ src/main.c | 248 ++++++++++++++++++++++++++++++++++ 9 files changed, 1118 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 README.md create mode 100644 src/common.c create mode 100644 src/common.h create mode 100644 src/db.c create mode 100644 src/db.h create mode 100644 src/main.c diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..124d7aa --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +.DS_Store +/imobax diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..a612ad9 --- /dev/null +++ b/LICENSE @@ -0,0 +1,373 @@ +Mozilla Public License Version 2.0 +================================== + +1. Definitions +-------------- + +1.1. "Contributor" + means each individual or legal entity that creates, contributes to + the creation of, or owns Covered Software. + +1.2. "Contributor Version" + means the combination of the Contributions of others (if any) used + by a Contributor and that particular Contributor's Contribution. + +1.3. "Contribution" + means Covered Software of a particular Contributor. + +1.4. "Covered Software" + means Source Code Form to which the initial Contributor has attached + the notice in Exhibit A, the Executable Form of such Source Code + Form, and Modifications of such Source Code Form, in each case + including portions thereof. + +1.5. "Incompatible With Secondary Licenses" + means + + (a) that the initial Contributor has attached the notice described + in Exhibit B to the Covered Software; or + + (b) that the Covered Software was made available under the terms of + version 1.1 or earlier of the License, but not also under the + terms of a Secondary License. + +1.6. "Executable Form" + means any form of the work other than Source Code Form. + +1.7. "Larger Work" + means a work that combines Covered Software with other material, in + a separate file or files, that is not Covered Software. + +1.8. "License" + means this document. + +1.9. "Licensable" + means having the right to grant, to the maximum extent possible, + whether at the time of the initial grant or subsequently, any and + all of the rights conveyed by this License. + +1.10. "Modifications" + means any of the following: + + (a) any file in Source Code Form that results from an addition to, + deletion from, or modification of the contents of Covered + Software; or + + (b) any new file in Source Code Form that contains any Covered + Software. + +1.11. "Patent Claims" of a Contributor + means any patent claim(s), including without limitation, method, + process, and apparatus claims, in any patent Licensable by such + Contributor that would be infringed, but for the grant of the + License, by the making, using, selling, offering for sale, having + made, import, or transfer of either its Contributions or its + Contributor Version. + +1.12. "Secondary License" + means either the GNU General Public License, Version 2.0, the GNU + Lesser General Public License, Version 2.1, the GNU Affero General + Public License, Version 3.0, or any later versions of those + licenses. + +1.13. "Source Code Form" + means the form of the work preferred for making modifications. + +1.14. "You" (or "Your") + means an individual or a legal entity exercising rights under this + License. For legal entities, "You" includes any entity that + controls, is controlled by, or is under common control with You. For + purposes of this definition, "control" means (a) the power, direct + or indirect, to cause the direction or management of such entity, + whether by contract or otherwise, or (b) ownership of more than + fifty percent (50%) of the outstanding shares or beneficial + ownership of such entity. + +2. License Grants and Conditions +-------------------------------- + +2.1. Grants + +Each Contributor hereby grants You a world-wide, royalty-free, +non-exclusive license: + +(a) under intellectual property rights (other than patent or trademark) + Licensable by such Contributor to use, reproduce, make available, + modify, display, perform, distribute, and otherwise exploit its + Contributions, either on an unmodified basis, with Modifications, or + as part of a Larger Work; and + +(b) under Patent Claims of such Contributor to make, use, sell, offer + for sale, have made, import, and otherwise transfer either its + Contributions or its Contributor Version. + +2.2. Effective Date + +The licenses granted in Section 2.1 with respect to any Contribution +become effective for each Contribution on the date the Contributor first +distributes such Contribution. + +2.3. Limitations on Grant Scope + +The licenses granted in this Section 2 are the only rights granted under +this License. No additional rights or licenses will be implied from the +distribution or licensing of Covered Software under this License. +Notwithstanding Section 2.1(b) above, no patent license is granted by a +Contributor: + +(a) for any code that a Contributor has removed from Covered Software; + or + +(b) for infringements caused by: (i) Your and any other third party's + modifications of Covered Software, or (ii) the combination of its + Contributions with other software (except as part of its Contributor + Version); or + +(c) under Patent Claims infringed by Covered Software in the absence of + its Contributions. + +This License does not grant any rights in the trademarks, service marks, +or logos of any Contributor (except as may be necessary to comply with +the notice requirements in Section 3.4). + +2.4. Subsequent Licenses + +No Contributor makes additional grants as a result of Your choice to +distribute the Covered Software under a subsequent version of this +License (see Section 10.2) or under the terms of a Secondary License (if +permitted under the terms of Section 3.3). + +2.5. Representation + +Each Contributor represents that the Contributor believes its +Contributions are its original creation(s) or it has sufficient rights +to grant the rights to its Contributions conveyed by this License. + +2.6. Fair Use + +This License is not intended to limit any rights You have under +applicable copyright doctrines of fair use, fair dealing, or other +equivalents. + +2.7. Conditions + +Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted +in Section 2.1. + +3. Responsibilities +------------------- + +3.1. Distribution of Source Form + +All distribution of Covered Software in Source Code Form, including any +Modifications that You create or to which You contribute, must be under +the terms of this License. You must inform recipients that the Source +Code Form of the Covered Software is governed by the terms of this +License, and how they can obtain a copy of this License. You may not +attempt to alter or restrict the recipients' rights in the Source Code +Form. + +3.2. Distribution of Executable Form + +If You distribute Covered Software in Executable Form then: + +(a) such Covered Software must also be made available in Source Code + Form, as described in Section 3.1, and You must inform recipients of + the Executable Form how they can obtain a copy of such Source Code + Form by reasonable means in a timely manner, at a charge no more + than the cost of distribution to the recipient; and + +(b) You may distribute such Executable Form under the terms of this + License, or sublicense it under different terms, provided that the + license for the Executable Form does not attempt to limit or alter + the recipients' rights in the Source Code Form under this License. + +3.3. Distribution of a Larger Work + +You may create and distribute a Larger Work under terms of Your choice, +provided that You also comply with the requirements of this License for +the Covered Software. If the Larger Work is a combination of Covered +Software with a work governed by one or more Secondary Licenses, and the +Covered Software is not Incompatible With Secondary Licenses, this +License permits You to additionally distribute such Covered Software +under the terms of such Secondary License(s), so that the recipient of +the Larger Work may, at their option, further distribute the Covered +Software under the terms of either this License or such Secondary +License(s). + +3.4. Notices + +You may not remove or alter the substance of any license notices +(including copyright notices, patent notices, disclaimers of warranty, +or limitations of liability) contained within the Source Code Form of +the Covered Software, except that You may alter any license notices to +the extent required to remedy known factual inaccuracies. + +3.5. Application of Additional Terms + +You may choose to offer, and to charge a fee for, warranty, support, +indemnity or liability obligations to one or more recipients of Covered +Software. However, You may do so only on Your own behalf, and not on +behalf of any Contributor. You must make it absolutely clear that any +such warranty, support, indemnity, or liability obligation is offered by +You alone, and You hereby agree to indemnify every Contributor for any +liability incurred by such Contributor as a result of warranty, support, +indemnity or liability terms You offer. You may include additional +disclaimers of warranty and limitations of liability specific to any +jurisdiction. + +4. Inability to Comply Due to Statute or Regulation +--------------------------------------------------- + +If it is impossible for You to comply with any of the terms of this +License with respect to some or all of the Covered Software due to +statute, judicial order, or regulation then You must: (a) comply with +the terms of this License to the maximum extent possible; and (b) +describe the limitations and the code they affect. Such description must +be placed in a text file included with all distributions of the Covered +Software under this License. Except to the extent prohibited by statute +or regulation, such description must be sufficiently detailed for a +recipient of ordinary skill to be able to understand it. + +5. Termination +-------------- + +5.1. The rights granted under this License will terminate automatically +if You fail to comply with any of its terms. However, if You become +compliant, then the rights granted under this License from a particular +Contributor are reinstated (a) provisionally, unless and until such +Contributor explicitly and finally terminates Your grants, and (b) on an +ongoing basis, if such Contributor fails to notify You of the +non-compliance by some reasonable means prior to 60 days after You have +come back into compliance. Moreover, Your grants from a particular +Contributor are reinstated on an ongoing basis if such Contributor +notifies You of the non-compliance by some reasonable means, this is the +first time You have received notice of non-compliance with this License +from such Contributor, and You become compliant prior to 30 days after +Your receipt of the notice. + +5.2. If You initiate litigation against any entity by asserting a patent +infringement claim (excluding declaratory judgment actions, +counter-claims, and cross-claims) alleging that a Contributor Version +directly or indirectly infringes any patent, then the rights granted to +You by any and all Contributors for the Covered Software under Section +2.1 of this License shall terminate. + +5.3. In the event of termination under Sections 5.1 or 5.2 above, all +end user license agreements (excluding distributors and resellers) which +have been validly granted by You or Your distributors under this License +prior to termination shall survive termination. + +************************************************************************ +* * +* 6. Disclaimer of Warranty * +* ------------------------- * +* * +* Covered Software is provided under this License on an "as is" * +* basis, without warranty of any kind, either expressed, implied, or * +* statutory, including, without limitation, warranties that the * +* Covered Software is free of defects, merchantable, fit for a * +* particular purpose or non-infringing. The entire risk as to the * +* quality and performance of the Covered Software is with You. * +* Should any Covered Software prove defective in any respect, You * +* (not any Contributor) assume the cost of any necessary servicing, * +* repair, or correction. This disclaimer of warranty constitutes an * +* essential part of this License. No use of any Covered Software is * +* authorized under this License except under this disclaimer. * +* * +************************************************************************ + +************************************************************************ +* * +* 7. Limitation of Liability * +* -------------------------- * +* * +* Under no circumstances and under no legal theory, whether tort * +* (including negligence), contract, or otherwise, shall any * +* Contributor, or anyone who distributes Covered Software as * +* permitted above, be liable to You for any direct, indirect, * +* special, incidental, or consequential damages of any character * +* including, without limitation, damages for lost profits, loss of * +* goodwill, work stoppage, computer failure or malfunction, or any * +* and all other commercial damages or losses, even if such party * +* shall have been informed of the possibility of such damages. This * +* limitation of liability shall not apply to liability for death or * +* personal injury resulting from such party's negligence to the * +* extent applicable law prohibits such limitation. Some * +* jurisdictions do not allow the exclusion or limitation of * +* incidental or consequential damages, so this exclusion and * +* limitation may not apply to You. * +* * +************************************************************************ + +8. Litigation +------------- + +Any litigation relating to this License may be brought only in the +courts of a jurisdiction where the defendant maintains its principal +place of business and such litigation shall be governed by laws of that +jurisdiction, without reference to its conflict-of-law provisions. +Nothing in this Section shall prevent a party's ability to bring +cross-claims or counter-claims. + +9. Miscellaneous +---------------- + +This License represents the complete agreement concerning the subject +matter hereof. If any provision of this License is held to be +unenforceable, such provision shall be reformed only to the extent +necessary to make it enforceable. Any law or regulation which provides +that the language of a contract shall be construed against the drafter +shall not be used to construe this License against a Contributor. + +10. Versions of the License +--------------------------- + +10.1. New Versions + +Mozilla Foundation is the license steward. Except as provided in Section +10.3, no one other than the license steward has the right to modify or +publish new versions of this License. Each version will be given a +distinguishing version number. + +10.2. Effect of New Versions + +You may distribute the Covered Software under the terms of the version +of the License under which You originally received the Covered Software, +or under the terms of any subsequent version published by the license +steward. + +10.3. Modified Versions + +If you create software not governed by this License, and you want to +create a new license for such software, you may create and use a +modified version of this License if you rename the license and remove +any references to the name of the license steward (except to note that +such modified license differs from this License). + +10.4. Distributing Source Code Form that is Incompatible With Secondary +Licenses + +If You choose to distribute Source Code Form that is Incompatible With +Secondary Licenses under the terms of this version of the License, the +notice described in Exhibit B of this License must be attached. + +Exhibit A - Source Code Form License Notice +------------------------------------------- + + This Source Code Form is subject to the terms of the Mozilla Public + License, v. 2.0. If a copy of the MPL was not distributed with this + file, You can obtain one at http://mozilla.org/MPL/2.0/. + +If it is not possible or desirable to put the notice in a particular +file, then You may include the notice in a location (such as a LICENSE +file in a relevant directory) where a recipient would be likely to look +for such a notice. + +You may add additional accurate notices of copyright ownership. + +Exhibit B - "Incompatible With Secondary Licenses" Notice +--------------------------------------------------------- + + This Source Code Form is "Incompatible With Secondary Licenses", as + defined by the Mozilla Public License, v. 2.0. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..dd7cdb0 --- /dev/null +++ b/Makefile @@ -0,0 +1,14 @@ +VERSION = 1.0.0 +TARGET = imobax +SRCDIR = src +FLAGS ?= -Wall -O3 -DVERSION=$(VERSION) -DTIMESTAMP="`date +'%d. %B %Y %H:%M:%S'`" -flto -lsqlite3 $(CFLAGS) + +.PHONY: all clean + +all: $(TARGET) + +$(TARGET): $(SRCDIR)/*.c + $(CC) -o $@ $^ $(FLAGS) + +clean: + rm -f $(TARGET) diff --git a/README.md b/README.md new file mode 100644 index 0000000..82ad419 --- /dev/null +++ b/README.md @@ -0,0 +1,26 @@ +# imobax + +The **i**OS **Mo**bile **Ba**ckup **X**tractor. +It extracts backups... and stuff. + +Binary releases for macOS: [here](https://github.com/Siguza/imobax/releases). + +### Building + +As always: + + make + +### Usage + + Usage: + ./imobax [-f] [-i] [-l] source-dir [target-dir] + + Options: + -f Force overwriting of existing files + -i Ignore missing files in backup + -l List contents only, write nothing + +### License + +[MPL2](https://github.com/Siguza/imobax/blob/master/LICENSE) with Exhibit B. diff --git a/src/common.c b/src/common.c new file mode 100644 index 0000000..9115e8f --- /dev/null +++ b/src/common.c @@ -0,0 +1,97 @@ +/* Copyright (c) 2019 Siguza + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This Source Code Form is "Incompatible With Secondary Licenses", as + * defined by the Mozilla Public License, v. 2.0. +**/ + +#include +#include +#include // free +#include // strdup +#include // faccessat, F_OK +#include // mkdirat + +#include "common.h" + +int mkdirat_recursive(int fd, const char *path, bool only_parent) +{ + int retval = -1; + char *str = NULL; + + if(path[0] == '\0') + { + LOG("mkdirat_recursive: bad argument"); + goto out; + } + + str = strdup(path); + if(!str) + { + ERRNO("strdup(%s)", path); + goto out; + } + + for(size_t i = 1; 1; ++i) + { + bool doit = false, + flip = false, + end = false; + if(str[i] == '/') + { + doit = true; + flip = true; + } + else if(str[i] == '\0') + { + if(!only_parent) + { + doit = true; + } + end = true; + } + + if(doit) + { + if(flip) + { + str[i] = '\0'; + } + + if(faccessat(fd, str, F_OK, 0) != 0) + { + if(errno != ENOENT) + { + ERRNO("access(%s)", str); + break; + } + else + { + if(mkdirat(fd, str, 0755) != 0) + { + ERRNO("mkdir(%s)", str); + break; + } + } + } + + if(flip) + { + str[i] = '/'; + } + } + + if(end) + { + break; + } + } + + retval = 0; +out:; + if(str) free(str); + return retval; +} diff --git a/src/common.h b/src/common.h new file mode 100644 index 0000000..29032b1 --- /dev/null +++ b/src/common.h @@ -0,0 +1,27 @@ +/* Copyright (c) 2019 Siguza + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This Source Code Form is "Incompatible With Secondary Licenses", as + * defined by the Mozilla Public License, v. 2.0. +**/ + +#ifndef COMMON_H +#define COMMON_H + +#include +#include +#include // fprintf, stderr +#include // strerror + +#define LOG(str, args...) do { fprintf(stderr, str "\n", ##args); } while(0) +#define ERRNO(str, args...) LOG(str ": %s", ##args, strerror(errno)) + +#define STRINGIFX(x) #x +#define STRINGIFY(x) STRINGIFX(x) + +int mkdirat_recursive(int fd, const char *path, bool only_parent); + +#endif diff --git a/src/db.c b/src/db.c new file mode 100644 index 0000000..6ea3d5f --- /dev/null +++ b/src/db.c @@ -0,0 +1,302 @@ +/* Copyright (c) 2019 Siguza + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This Source Code Form is "Incompatible With Secondary Licenses", as + * defined by the Mozilla Public License, v. 2.0. +**/ + +#include // fcntl, F_GETPATH, openat, O_* +#include +#include +#include // malloc, free +#include // strdup, memcmp +#include +#include // close +#include // mmap, munmap +#include // MAXPATHLEN +#include // fstat +#include // CC_SHA1 + +#include "common.h" +#include "db.h" + +static int db_getlist_cb(void *arg, int num, char **data, char **cols) +{ + int retval = -1; + db_ent_t **head = arg; + char *fileID = NULL, + *domain = NULL, + *relativePath = NULL; + if(!data[0] || !data[1] || !data[2]) + { + LOG("NULL in result"); + goto out; + } + fileID = strdup(data[0]), + domain = strdup(data[1]), + relativePath = strdup(data[2]); + if(!fileID || !domain || !relativePath) + { + ERRNO("strdup"); + goto out; + } + db_ent_t *ent = malloc(sizeof(db_ent_t)); + if(!ent) + { + ERRNO("malloc"); + goto out; + } + ent->next = *head; + ent->fileID = fileID; + ent->domain = domain; + ent->relativePath = relativePath; + *head = ent; + // Prevent freeing + fileID = NULL; + domain = NULL; + relativePath = NULL; + + retval = SQLITE_OK; +out:; + if(fileID) free(fileID); + if(domain) free(domain); + if(relativePath) free(relativePath); + return retval; +} + +db_ent_t* db_getlist_sqlite3(int srcdir) +{ + // Ideally we'd want to pass a file handle to SQLite, + // to avoid race conditions when folders are moved around. + // But since SQLite only accepts path names for opening, + // we have to get a path from our already open fd. + // This actually avoids the case where the folder has been moved + // between having been opened and now, but there's still a race window + // between the invocations of fcntl() and sqlite3_open_v2(). + // But if the API can't do better, what are we supposed to do? + char buf[MAXPATHLEN]; + int fd = -1; + sqlite3 *db = NULL; + char *err = NULL; + db_ent_t *retval = NULL; + + fd = openat(srcdir, DBFILE_SQLITE, O_RDONLY); + if(fd == -1) + { + ERRNO("open(" DBFILE_SQLITE ")"); + goto out; + } + if(fcntl(fd, F_GETPATH, buf) != 0) + { + ERRNO("fcntl(" DBFILE_SQLITE ")"); + goto out; + } + + int r = sqlite3_open_v2(buf, &db, SQLITE_OPEN_READONLY | SQLITE_OPEN_NOMUTEX, NULL); // yolo + if(r != SQLITE_OK) + { + LOG("sqlite3_open: %s", sqlite3_errstr(r)); + goto out; + } + + r = sqlite3_exec(db, "SELECT `fileID`, `domain`, `relativePath` FROM `Files` WHERE `flags` = 1", &db_getlist_cb, &retval, &err); + if(r != SQLITE_OK) + { + LOG("sqlite3_exec: %s", err); + db_cleanup(retval); + retval = NULL; + goto out; + } + +out:; + if(err) sqlite3_free(err); + if(db) sqlite3_close(db); + if(fd != -1) close(fd); + return retval; +} + +#define MBDB_UINT16(var) \ +do \ +{ \ + if(data + 2 > end) \ + { \ + LOG("mbdb: truncated at uint16"); \ + goto out; \ + } \ + var = ((uint16_t)data[0] << 8) | (uint16_t)data[1]; \ + data += 2; \ +} while(0) + +#define MBDB_STR(str, slen) \ +do \ +{ \ + MBDB_UINT16(slen); \ + if(slen == 0xffff) \ + { \ + str = NULL; \ + } \ + else \ + { \ + if(data + slen > end) \ + { \ + LOG("mbdb: truncated at string data"); \ + goto out; \ + } \ + str = (char*)data; \ + data += slen; \ + } \ +} while(0) + +db_ent_t* db_getlist_mbdb(int srcdir) +{ + bool success = false; + db_ent_t *retval = NULL; + int fd = -1; + void *addr = MAP_FAILED; + char *fileID = NULL, + *domain = NULL, + *relativePath = NULL, + *fullPath = NULL; + + fd = openat(srcdir, DBFILE_MBDB, O_RDONLY); + if(fd == -1) + { + ERRNO("open(" DBFILE_MBDB ")"); + goto out; + } + struct stat s; + if(fstat(fd, &s) != 0) + { + ERRNO("stat(" DBFILE_MBDB ")"); + goto out; + } + size_t flen = s.st_size; + addr = mmap(NULL, flen, PROT_READ, MAP_FILE | MAP_PRIVATE, fd, 0); + if(addr == MAP_FAILED) + { + ERRNO("mmap(" DBFILE_MBDB ")"); + goto out; + } + + uint8_t *data = addr; + uint8_t * const end = data + flen; + if(data + 6 > end) + { + LOG("mbdb: truncated at magic"); + goto out; + } + if(memcmp(data, "mbdb\x05\x00", 6) != 0) + { + LOG("mbdb: bad magic"); + goto out; + } + data += 6; + + while(data < end) + { + char *dummy = NULL, + *dom = NULL, + *path = NULL; + size_t dummyLen = 0, + domLen = 0, + pathLen = 0; + uint16_t mode = 0; + + MBDB_STR(dom, domLen); + MBDB_STR(path, pathLen); + MBDB_STR(dummy, dummyLen); + MBDB_STR(dummy, dummyLen); + MBDB_STR(dummy, dummyLen); + MBDB_UINT16(mode); + data += 38; + if(data > end) + { + LOG("mbdb: truncated at attributes"); + goto out; + } + size_t nprops = (uint8_t)data[-1]; + for(size_t i = 0; i < nprops; ++i) + { + MBDB_STR(dummy, dummyLen); + MBDB_STR(dummy, dummyLen); + } + + if((mode & S_IFMT) != S_IFREG) + { + continue; + } + fileID = malloc(41), + domain = strndup(dom, domLen), + relativePath = strndup(path, pathLen); + if(!fileID || !domain || !relativePath) + { + ERRNO("strndup"); + goto out; + } + asprintf(&fullPath, "%s-%s", domain, relativePath); + if(!fullPath) + { + ERRNO("asprintf"); + goto out; + } + CC_SHA1(fullPath, strlen(fullPath), (unsigned char*)(fileID + 20)); + for(size_t i = 0; i < 20; ++i) + { + uint8_t val = (uint8_t)fileID[20 + i], + hi = (val & 0xf0) >> 4, + lo = (val & 0x0f); + fileID[2*i ] = hi >= 10 ? 'a' + (hi - 10) : '0' + hi; + fileID[2*i + 1] = lo >= 10 ? 'a' + (lo - 10) : '0' + lo; + } + fileID[40] = '\0'; + db_ent_t *ent = malloc(sizeof(db_ent_t)); + if(!ent) + { + ERRNO("malloc"); + goto out; + } + ent->next = retval; + ent->fileID = fileID; + ent->domain = domain; + ent->relativePath = relativePath; + retval = ent; + // Prevent freeing + fileID = NULL; + domain = NULL; + relativePath = NULL; + // Actually free + free(fullPath); + fullPath = NULL; + } + + success = true; +out:; + if(fileID) free(fileID); + if(domain) free(domain); + if(relativePath) free(relativePath); + if(fullPath) free(fullPath); + if(addr != MAP_FAILED) munmap(addr, flen); + if(fd != -1) close(fd); + if(!success) + { + db_cleanup(retval); + retval = NULL; + } + return retval; +} + +void db_cleanup(db_ent_t *head) +{ + while(head) + { + db_ent_t *next = head->next; + free((void*)head->fileID); + free((void*)head->domain); + free((void*)head->relativePath); + free(head); + head = next; + } +} diff --git a/src/db.h b/src/db.h new file mode 100644 index 0000000..3067ae7 --- /dev/null +++ b/src/db.h @@ -0,0 +1,29 @@ +/* Copyright (c) 2019 Siguza + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This Source Code Form is "Incompatible With Secondary Licenses", as + * defined by the Mozilla Public License, v. 2.0. +**/ + +#ifndef DB_H +#define DB_H + +#define DBFILE_SQLITE "Manifest.db" +#define DBFILE_MBDB "Manifest.mbdb" + +typedef struct db_ent +{ + struct db_ent *next; + const char *fileID, + *domain, + *relativePath; +} db_ent_t; + +db_ent_t* db_getlist_sqlite3(int srcdir); +db_ent_t* db_getlist_mbdb(int srcdir); +void db_cleanup(db_ent_t *head); + +#endif diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..eb76b38 --- /dev/null +++ b/src/main.c @@ -0,0 +1,248 @@ +/* Copyright (c) 2019 Siguza + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This Source Code Form is "Incompatible With Secondary Licenses", as + * defined by the Mozilla Public License, v. 2.0. +**/ + +#include +#include // open, O_* +#include +#include // [as|f]printf, stderr, fputs +#include // free +#include // strcmp, strlen +#include // close, access, faccessat, F_OK + +#include "common.h" +#include "db.h" + +static void usage(const char *self) +{ + fprintf(stderr, "Usage:\n" + " %s [-f] [-i] [-l] source-dir [target-dir]\n" + "\n" + "Options:\n" + " -f Force overwriting of existing files\n" + " -i Ignore missing files in backup\n" + " -l List contents only, write nothing\n" + , self); +} + +int main(int argc, const char **argv) +{ + int retval = -1; + bool force = false, + ignore = false, + list = false; + const char *srcstr = NULL, + *dststr = NULL; + char *topath = NULL; + int srcdir = -1, + dstdir = -1, + auxfd = -1, + fromfd = -1, + tofd = -1; + db_ent_t *head = NULL; + int aoff = 1; + for(; aoff < argc; ++aoff) + { + if(argv[aoff][0] != '-') break; + if(strcmp(argv[aoff], "-f") == 0) + { + force = true; + } + else if(strcmp(argv[aoff], "-i") == 0) + { + ignore = true; + }else if(strcmp(argv[aoff], "-l") == 0) + { + list = true; + } + else + { + LOG("Unrecognised option: %s", argv[aoff]); + fputs("\n", stderr); + usage(argv[0]); + goto out; + } + } + int wantargs = list ? 1 : 2; + if(argc - aoff != wantargs) + { + if(argc > 1) + { + LOG("Too %s arguments.", (argc - aoff < wantargs) ? "few" : "many"); + fputs("\n", stderr); + } + else + { + fprintf(stderr, "imobax" +#ifdef VERSION + " v" STRINGIFY(VERSION) +#endif +#ifdef TIMESTAMP + ", compiled on " STRINGIFY(TIMESTAMP) +#endif + "\n\n" + ); + } + usage(argv[0]); + goto out; + } + srcstr = argv[aoff++]; + if(!list) + { + dststr = argv[aoff++]; + } + + srcdir = open(srcstr, O_RDONLY); + if(srcdir == -1) + { + ERRNO("open(%s)", srcstr); + goto out; + } + + bool two_level = false; + if(faccessat(srcdir, DBFILE_SQLITE, F_OK, 0) == 0) + { + head = db_getlist_sqlite3(srcdir); + two_level = true; + } + else if(faccessat(srcdir, DBFILE_MBDB, F_OK, 0) == 0) + { + head = db_getlist_mbdb(srcdir); + } + else + { + LOG("Found neither " DBFILE_SQLITE " nor " DBFILE_MBDB "."); + goto out; + } + if(!head) + { + goto out; + } + + if(list) + { + size_t len = 0; + for(db_ent_t *ent = head; ent; ent = ent->next) + { + size_t l = strlen(ent->domain); + if(l > len) len = l; + } + for(db_ent_t *ent = head; ent; ent = ent->next) + { + printf("%-40s %-*s %s\n", ent->fileID, (int)len, ent->domain, ent->relativePath); + } + } + else + { + int crflags = O_CREAT | (force ? 0 : O_EXCL); + + if(mkdirat_recursive(AT_FDCWD, dststr, false) != 0) + { + goto out; + } + dstdir = open(dststr, O_RDONLY); + if(dstdir == -1) + { + ERRNO("open(%s)", dststr); + goto out; + } + + for(db_ent_t *ent = head; ent; ent = ent->next) + { + asprintf(&topath, "%s/%s", ent->domain, ent->relativePath); + if(!topath) + { + ERRNO("asprintf"); + goto out; + } + // Turn first dash in domain part into a slash + for(size_t i = 0, len = strlen(ent->domain); i < len && topath[i] != '\0'; ++i) + { + if(topath[i] == '-') + { + topath[i] = '/'; + break; + } + } + + if(two_level) + { + char aux[3] = { ent->fileID[0], ent->fileID[1], '\0' }; + auxfd = openat(srcdir, aux, O_RDONLY); + if(auxfd == -1) + { + ERRNO("open(%s)", aux); + if(ignore) + { + goto next; + } + goto out; + } + } + fromfd = openat(auxfd == -1 ? AT_FDCWD : auxfd, ent->fileID, O_RDONLY); + if(fromfd == -1) + { + ERRNO("open(%s)", ent->fileID); + if(ignore) + { + goto next; + } + goto out; + } + if(mkdirat_recursive(dstdir, topath, true) != 0) + { + goto out; + } + tofd = openat(dstdir, topath, O_WRONLY | crflags); + if(tofd == -1) + { + ERRNO("open(%s)", topath); + goto out; + } + if(fcopyfile(fromfd, tofd, NULL, COPYFILE_ALL) != 0) + { + ERRNO("copyfile(%s)", topath); + goto out; + } + + next:; + if(tofd != -1) + { + close(tofd); + tofd = -1; + } + if(fromfd != -1) + { + close(fromfd); + fromfd = -1; + } + if(auxfd != -1) + { + close(auxfd); + auxfd = -1; + } + if(topath) + { + free(topath); + topath = NULL; + } + } + } + + retval = 0; +out:; + if(tofd != -1) close(tofd); + if(fromfd != -1) close(fromfd); + if(auxfd != -1) close(auxfd); + if(topath) free(topath); + if(head) db_cleanup(head); + if(dstdir != -1) close(dstdir); + if(srcdir != -1) close(srcdir); + return retval; +}