1 files changed, 64 insertions, 75 deletions

diff --git a/src/encryption.c b/src/encryption.c
index c3f77ce..c86adfa 100644
--- a/src/encryption.c
+++ b/src/encryption.c
@@ -17,7 +17,7 @@
 #define _GNU_SOURCE 1
 
 #ifndef __VXGG_REWRITE___ENCRYPTION_C___1481879318188___
-#define __VXGG_REWRITE___ENCRYPTION_C___1481879318188___
+#define __VXGG_REWRITE___ENCRYPTION_C___1481879318188___ 1
 
 #define TPSIZE (1<<13)
 
@@ -40,75 +40,68 @@
 #include <errno.h>
 #include <error.h>
 
-/// Determines whether any function that calls libsodium functions also checks to make sure libsodium is actually initialized. May
-/// cause unexpected issues with early exiting due to libsodium failing to initialize properly. It's recommended that you just
-/// manually run `sodium_init()` in some main or init function of your own so that you can deal with a potential error yourself
-#define ___VXGG___ALWAYS_CHECK_LIBSODIUM___ 1
+/// Runs sodium_init() before every call of a sodium function. Use is discouraged as this may cause unexpected early exits
+#define ___VXGG___ALWAYS_CHECK_LIBSODIUM___ 0
 
-/// Grants access to the `vxgg_setsodiumfailcb` function, which can be used to set a custom callback for what to do when libsodium
-/// fails upon initialization
-#define ___VXGG___USE_CLS_CALLBACK___ 1
+/// Defines `vxgg_setsodiumfailcb` function, which is used to set a custom callback for handling a failed libsodium init
+#define ___VXGG___USE_CLS_CALLBACK___ 0
 
-/// Chunk size for en/decryption. I originally wanted to use st_blksize from stat(), but given that those chunks may be of different
-/// sizes between computers / filesystems / architectures / files, it's easier to just have this be a consistent macro
+/// Chunk size for encryption/decryption
 #define CHUNKSIZE (1 << 9)
 
-// Fuck reading from a file. Even if someone ran strings on the binary and got this they wouldn't be able to regenerate the key
 //! A list of possible words for password creation
-#define PASSWORD_WORDS (\
-    (const char * const []){\
-        "the", "of", "to", "and", "for", "our", "their", "has", "in", "he", "a", "them", "that", "these", "by", "have", "we", \
-        "us", "people", "which", "all", "is", "with", "laws", "be", "are", "his", "states", "on", "they", "right", "it", "from", \
-        "government", "such", "among", "powers", "most", "an", "time", "should", "new", "as", "been", "colonies", "assent", \
-        "large", "at", "independent", "free", "united", "when", "mankind", "hold", "rights", "governments", "consent", "its", \
-        "long", "themselves", "abolishing", "usurpations", "absolute", "repeated", "this", "world", "refused", "pass", "other", \
-        "others", "without", "justice", "peace", "power", "seas", "war", "do", "declaration", "america", "becomes", "necessary", \
-        "political", "equal", "declare", "causes", "separation", "men", "happiness", "any", "form", "alter", "or", "will", \
-        "forms", "same", "object", "off", "necessity", "history", "great", "britain", "tyranny", "over", "public", "good", \
-        "unless", "suspended", "so", "would", "legislature", "only", "legislative", "bodies", "purpose", "into", "dissolved", \
-        "state", "endeavoured", "refusing", "hither", "conditions", "establishing", "offices", "out", "armies", "legislatures", \
-        "render", "jurisdiction", "foreign", "acts", "pretended", "trial", "inhabitants", "cases", "transporting", "rule", \
-        "declaring", "here", "protection", "against", "lives", "circumstances", "ages", "totally", "friends", "brethren", "whose", \
-        "every", "may", "therefore", "ought", "unanimous", "thirteen", "course", "human", "events", "one", "dissolve", "bands", \
-        "connected", "another", "assume", "earth", "separate", "station", "nature", "natures", "god", "entitle", "decent", \
-        "respect", "opinions", "requires", "impel", "truths", "self", "evident", "created", "endowed", "creator", "certain", \
-        "unalienable", "life", "liberty", "pursuit", "secure", "instituted", "deriving", "just", "governed", "whenever", \
-        "destructive", "ends", "abolish", "institute", "laying", "foundation", "principles", "organizing", "shall", "seem", \
-        "likely", "effect", "safety", "prudence", "indeed", "dictate", "established", "not", "changed", "light", "transient", \
-        "accordingly", "experience", "hath", "shewn", "more", "disposed", "suffer", "while", "evils", "sufferable", "than", \
-        "accustomed", "but", "train", "abuses", "pursuing", "invariably", "evinces", "design", "reduce", "under", "despotism", \
-        "duty", "throw", "provide", "guards", "future", "security", "patient", "sufferance", "now", "constrains", "former", \
-        "systems", "present", "king", "injuries", "having", "direct", "establishment", "prove", "let", "facts", "submitted", \
-        "candid", "wholesome", "forbidden", "governors", "immediate", "pressing", "importance", "operation", "till", "obtained", \
-        "utterly", "neglected", "attend", "accommodation", "districts", "those", "relinquish", "representation", "inestimable", \
-        "formidable", "tyrants", "called", "together", "places", "unusual", "uncomfortable", "distant", "depository", "records", \
-        "sole", "fatiguing", "compliance", "measures", "representative", "houses", "repeatedly", "opposing", "manly", "firmness", \
-        "invasions", "after", "dissolutions", "cause", "elected", "whereby", "incapable", "annihilation", "returned", "exercise", \
-        "remaining", "mean", "exposed", "dangers", "invasion", "convulsions", "within", "prevent", "population", "obstructing", \
-        "naturalization", "foreigners", "encourage", "migrations", "raising", "appropriations", "lands", "obstructed", \
-        "administration", "judiciary", "made", "judges", "dependent", "alone", "tenure", "amount", "payment", "salaries", \
-        "erected", "multitude", "sent", "swarms", "officers", "harrass", "eat", "substance", "kept", "times", "standing", \
-        "affected", "military", "superior", "civil", "combined", "subject", "constitution", "unacknowledged", "giving", \
-        "legislation", "quartering", "armed", "troops", "protecting", "mock", "punishment", "murders", "commit", "cutting", \
-        "trade", "parts", "imposing", "taxes", "depriving", "many", "benefits", "jury", "beyond", "tried", "offences", "system", \
-        "english", "neighbouring", "province", "therein", "arbitrary", "enlarging", "boundaries", "once", "example", "fit", \
-        "instrument", "introducing", "taking", "away", "charters", "valuable", "altering", "fundamentally", "suspending", "own", \
-        "invested", "legislate", "whatsoever", "abdicated", "waging", "plundered", "ravaged", "coasts", "burnt", "towns", \
-        "destroyed", "mercenaries", "compleat", "works", "death", "desolation", "already", "begun", "cruelty", "perfidy", \
-        "scarcely", "paralleled", "barbarous", "unworthy", "head", "civilized", "nation", "constrained", "fellow", "citizens", \
-        "taken", "captive", "high", "bear", "arms", "country", "become", "executioners", "fall", "hands", "excited", "domestic", \
-        "insurrections", "amongst", "bring", "frontiers", "merciless", "indian", "savages", "known", "warfare", "undistinguished", \
-        "destruction", "sexes", "stage", "oppressions", "petitioned", "redress", "humble", "terms", "petitions", "answered", \
-        "injury", "prince", "character", "thus", "marked", "act", "define", "tyrant", "unfit", "ruler", "nor", "wanting", \
-        "attentions", "brittish", "warned", "attempts", "extend", "unwarrantable", "reminded", "emigration", "settlement", \
-        "appealed", "native", "magnanimity", "conjured", "ties", "common", "kindred", "disavow", "inevitably", "interrupt", \
-        "connections", "correspondence", "too", "deaf", "voice", "consanguinity", "must", "acquiesce", "denounces", "rest", \
-        "enemies", "representatives", "general", "congress", "assembled", "appealing", "supreme", "judge", "rectitude", \
-        "intentions", "name", "authority", "solemnly", "publish", "absolved", "allegiance", "british", "crown", "connection", \
-        "between", "full", "levy", "conclude", "contract", "alliances", "establish", "commerce", "things", "support", "firm", \
-        "reliance", "divine", "providence", "mutually", "pledge", "each", "fortunes", "sacred", "honor"\
-    }\
-)
+#define PASSWORD_WORDS ((const char * const []){\
+    "the", "of", "to", "and", "for", "our", "their", "has", "in", "he", "a", "them", "that", "these", "by", "have", "we", \
+    "us", "people", "which", "all", "is", "with", "laws", "be", "are", "his", "states", "on", "they", "right", "it", "from", \
+    "government", "such", "among", "powers", "most", "an", "time", "should", "new", "as", "been", "colonies", "assent", \
+    "large", "at", "independent", "free", "united", "when", "mankind", "hold", "rights", "governments", "consent", "its", \
+    "long", "themselves", "abolishing", "usurpations", "absolute", "repeated", "this", "world", "refused", "pass", "other", \
+    "others", "without", "justice", "peace", "power", "seas", "war", "do", "declaration", "america", "becomes", "necessary", \
+    "political", "equal", "declare", "causes", "separation", "men", "happiness", "any", "form", "alter", "or", "will", \
+    "forms", "same", "object", "off", "necessity", "history", "great", "britain", "tyranny", "over", "public", "good", \
+    "unless", "suspended", "so", "would", "legislature", "only", "legislative", "bodies", "purpose", "into", "dissolved", \
+    "state", "endeavoured", "refusing", "hither", "conditions", "establishing", "offices", "out", "armies", "legislatures", \
+    "render", "jurisdiction", "foreign", "acts", "pretended", "trial", "inhabitants", "cases", "transporting", "rule", \
+    "declaring", "here", "protection", "against", "lives", "circumstances", "ages", "totally", "friends", "brethren", "whose", \
+    "every", "may", "therefore", "ought", "unanimous", "thirteen", "course", "human", "events", "one", "dissolve", "bands", \
+    "connected", "another", "assume", "earth", "separate", "station", "nature", "natures", "god", "entitle", "decent", \
+    "respect", "opinions", "requires", "impel", "truths", "self", "evident", "created", "endowed", "creator", "certain", \
+    "unalienable", "life", "liberty", "pursuit", "secure", "instituted", "deriving", "just", "governed", "whenever", \
+    "destructive", "ends", "abolish", "institute", "laying", "foundation", "principles", "organizing", "shall", "seem", \
+    "likely", "effect", "safety", "prudence", "indeed", "dictate", "established", "not", "changed", "light", "transient", \
+    "accordingly", "experience", "hath", "shewn", "more", "disposed", "suffer", "while", "evils", "sufferable", "than", \
+    "accustomed", "but", "train", "abuses", "pursuing", "invariably", "evinces", "design", "reduce", "under", "despotism", \
+    "duty", "throw", "provide", "guards", "future", "security", "patient", "sufferance", "now", "constrains", "former", \
+    "systems", "present", "king", "injuries", "having", "direct", "establishment", "prove", "let", "facts", "submitted", \
+    "candid", "wholesome", "forbidden", "governors", "immediate", "pressing", "importance", "operation", "till", "obtained", \
+    "utterly", "neglected", "attend", "accommodation", "districts", "those", "relinquish", "representation", "inestimable", \
+    "formidable", "tyrants", "called", "together", "places", "unusual", "uncomfortable", "distant", "depository", "records", \
+    "sole", "fatiguing", "compliance", "measures", "representative", "houses", "repeatedly", "opposing", "manly", "firmness", \
+    "invasions", "after", "dissolutions", "cause", "elected", "whereby", "incapable", "annihilation", "returned", "exercise", \
+    "remaining", "mean", "exposed", "dangers", "invasion", "convulsions", "within", "prevent", "population", "obstructing", \
+    "naturalization", "foreigners", "encourage", "migrations", "raising", "appropriations", "lands", "obstructed", \
+    "administration", "judiciary", "made", "judges", "dependent", "alone", "tenure", "amount", "payment", "salaries", \
+    "erected", "multitude", "sent", "swarms", "officers", "harrass", "eat", "substance", "kept", "times", "standing", \
+    "affected", "military", "superior", "civil", "combined", "subject", "constitution", "unacknowledged", "giving", \
+    "legislation", "quartering", "armed", "troops", "protecting", "mock", "punishment", "murders", "commit", "cutting", \
+    "trade", "parts", "imposing", "taxes", "depriving", "many", "benefits", "jury", "beyond", "tried", "offences", "system", \
+    "english", "neighbouring", "province", "therein", "arbitrary", "enlarging", "boundaries", "once", "example", "fit", \
+    "instrument", "introducing", "taking", "away", "charters", "valuable", "altering", "fundamentally", "suspending", "own", \
+    "invested", "legislate", "whatsoever", "abdicated", "waging", "plundered", "ravaged", "coasts", "burnt", "towns", \
+    "destroyed", "mercenaries", "compleat", "works", "death", "desolation", "already", "begun", "cruelty", "perfidy", \
+    "scarcely", "paralleled", "barbarous", "unworthy", "head", "civilized", "nation", "constrained", "fellow", "citizens", \
+    "taken", "captive", "high", "bear", "arms", "country", "become", "executioners", "fall", "hands", "excited", "domestic", \
+    "insurrections", "amongst", "bring", "frontiers", "merciless", "indian", "savages", "known", "warfare", "undistinguished", \
+    "destruction", "sexes", "stage", "oppressions", "petitioned", "redress", "humble", "terms", "petitions", "answered", \
+    "injury", "prince", "character", "thus", "marked", "act", "define", "tyrant", "unfit", "ruler", "nor", "wanting", \
+    "attentions", "brittish", "warned", "attempts", "extend", "unwarrantable", "reminded", "emigration", "settlement", \
+    "appealed", "native", "magnanimity", "conjured", "ties", "common", "kindred", "disavow", "inevitably", "interrupt", \
+    "connections", "correspondence", "too", "deaf", "voice", "consanguinity", "must", "acquiesce", "denounces", "rest", \
+    "enemies", "representatives", "general", "congress", "assembled", "appealing", "supreme", "judge", "rectitude", \
+    "intentions", "name", "authority", "solemnly", "publish", "absolved", "allegiance", "british", "crown", "connection", \
+    "between", "full", "levy", "conclude", "contract", "alliances", "establish", "commerce", "things", "support", "firm", \
+    "reliance", "divine", "providence", "mutually", "pledge", "each", "fortunes", "sacred", "honor"\
+})
 //! Short macro for getting the `PASSWORD_WORDS` array size
 #define PASSWORD_WORDS_LEN (STATIC_ARRAY_LEN(PASSWORD_WORDS))
 
@@ -219,17 +212,14 @@ int maketmp(const char * const dest) {
  * @retval (int)[-1, 0] 0 on success, -1 on error
  */
 int linkto(const char * const target, int tgfd) {
-    if(!target) ERRRET(EINVAL, -1);
-
+    if(!target || tgfd < 0 || access(target, F_OK) != -1) ERRRET(EINVAL, -1);
     char *path = NULL;
+
     asprintf(&path, "/proc/self/fd/%d", tgfd);
-    if(!path)
-        ERROR(1, errno, "<linkto> Couldn't get path to move file into system",);
-    remove(target); // Make sure an old version isn't sticking around (it's not catastrophic if this fails, but it should be noted or logged somewhere)
-    // TODO: This is bad. If a file gets deleted and the program crashes before the new one can get linked into the fs, the data is lost.
-    // I really should write a function entirely dedicated to dealing with linking
+    if(!path) ERROR(1, errno, "<linkto> Couldn't get path to move file into system",);
 
     int res = linkat(AT_FDCWD, path, AT_FDCWD, target, AT_SYMLINK_FOLLOW);
+
     free(path);
     return res;
 }
@@ -238,7 +228,6 @@ int linkto(const char * const target, int tgfd) {
 static void __ucl_close(void *fd) {
     if(!fd) return;
     close(*(int*)fd);
-    *(int*)fd = -1;
     return;
 }
 
@@ -262,8 +251,8 @@ int encrypttofile(FILE *src, FILE *dst, const unsigned char key[crypto_secretstr
         checksodium();
     #endif
 
-    unsigned char  buf[CHUNKSIZE], cbuf[CHUNKSIZE + crypto_secretstream_xchacha20poly1305_ABYTES];
-    unsigned char  header[crypto_secretstream_xchacha20poly1305_HEADERBYTES];
+    unsigned char buf[CHUNKSIZE], cbuf[CHUNKSIZE + crypto_secretstream_xchacha20poly1305_ABYTES];
+    unsigned char header[crypto_secretstream_xchacha20poly1305_HEADERBYTES];
     crypto_secretstream_xchacha20poly1305_state state;
     unsigned long long cbuflen;
     unsigned char tag;