Am Mittwoch, 11. Januar 2017 00:45:45 UTC+1 schrieb Robert Relyea: > On 01/10/2017 02:07 PM, Opa114 wrote: > > Am Dienstag, 10. Januar 2017 22:24:10 UTC+1 schrieb Robert Relyea: > >> On 01/10/2017 10:18 AM, Opa114 wrote: > >>> thanks, but these facts i know. > >>> I don't want top let multiple applications open one Database, i want to > >>> open multiple different Mozilla databases, in the old standard format, > >>> with one (my) application. > >>> > >>> I tried to use the NSS_Init functions. These works with openening one > >>> database, but when i open a second one the whole application crashes,so > >>> that's why i asked the question and may be get some working example c++ > >>> code? > >> 1) Where are you crashing (it's not expected to work, but I don't expect > >> a crash because you called NSS_Init again). > >> > >> 2) To open additional databases you want to use SECMOD_OpenUserDB: > >> > >> https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/PKCS11_Functions#SECMOD_OpenUserDB > >> > >> You can call that multiple times. > >> Once the database is opened any of the NSS find functions will find all > >> the certs in both databases. The slot returned from SECOMD_OpenUserDB > >> can be used in functions that take a slot to narrow the operations just > >> to that particular database. > >> > >> To NSS each database will look basically like a smart card. > >> > >> When you are through with that database you can use SECMOD_CloseUserDB() > >> > >> bob > > > > thanks for reply. Here are first some little code of which did not work, > > that means it crashes: > > > > functionLoadFirefox() { > > SECStatus rv = NSS_InitReadWrite(PATH_TO_FF_DB); > > ... if success load Certificates with PK11_ListCerts(PK11CertListAll, NULL); > > NSS_Shutdown(); > > } > > > > functionLoadThunderbird() { > > SECStatus rv = NSS_InitReadWrite(PATH_TO_TB_DB); > > ... if success load Certificates with PK11_ListCerts(PK11CertListAll, NULL); > > NSS_Shutdown(); > > } > > > > So these are my two functions in which i opened and clos the databases and > > retrieve the certificates. > So the certs you got from the first call is likely preventing > NSS_Shutdown from completing. The certs hold references to the > respective slots. Those references prevent NSS_Shutdown from closing > completely. The will prevent the second NSS_Init from succeeding, so you > probably crash in your second shutdown. You can detect this happened by > looking at the return value from NSS_Shutdown(). > > > > --> 2) To open additional databases you want to use SECMOD_OpenUserDB > > So this means. First i have to call NSS_Init with let's say firefox > > database ad the i have to call SECMOD_OpenUserDB with the > > thudnerbirddatabse, right? Or must i load both with the SECMOD_OpenUserDB? > You can either use NSS_Init with no database and then call > SECMOD_OpenUserDB() for both, or you can call NSS_Init with one database > and then call SECMOD_OpenUserDB with the other. > > > > --> Once the database is opened any of the NSS find functions will find all > > the certs in both databases > > But i have to know from which databse the certificates are coming from. So > > i need to know that let's say Certificate ABC ist stored inside Firefox > > Databse and Certificate 123 is stored in Thunerbird Database. How can i do > > that? or is this not possible? > The slot the database can be found in the cert->slot entry, but this > will only give you ONE of the slots the cert lives in. If a cert exists > in both databases, it will have a single entry on the list and be > "somewhat" random which slot is listed (If you open one database with > NSS_Init and the second with SECMOD_OpenUserDB() then the one you opened > with SECMOD_OpenUserDB() will be the slot that shows up. > > To fix this issue, there's a function called PK11_GetAllSlotsForCert() > which returns a slotList and will return all the slots that hold this > cert. The slots map one for one to the databases you opened (or any > smart cards you have loaded). You can control the 'tokenName' of each > slot with the string arguments you pass to SECMOD_OpenUserDB(), and you > can get the token name with PK11_GetTokenName() on each slot on the list.. > > You could also use PK11_ListCertsInSlot() which takes a slot > (SECMOD_OpenUserDB() will return a slot for you) and lists only those > certs in that slot. > > Be sure to free all these things once you are through with them, or your > shutdown will fail at the end again. > > > bob
thanks again for the detailed explanation, that helps me a lot - many thanks! --> So the certs you got from the first call is likely preventing NSS_Shutdown from completing..... So when i free the used stuff i can close the database correctly, so that i can open the second one. If i can close the first one correctly and NSS shuts down i should be able to open the second one, too. Can you give me some more details to my piece of code or in general how to free the things correctly? So if it will be better to open the two or more databases but successively and not at the same time as i wanted to do it. Would this be the better working solution. The only thing is that i then must reopen and shutdown the databses multiple times if needed. And did i understand it right, that i can use SECMOD_OpenUserDB() and SECMOD_CloseUserDB() to open and close the databases instead of using NSS_Init() and NSS_Shutdown()? The SECMOD-functions do call them internal or? Or does it not matter which of the functions i use? --> ... if you try to trust one CA in one DB/slot and not trust it in another DB/slot, you won't actually be able to do that This is extremely bad, because i have to maybe change the Trust-Status of some Certificates. So in conclusion for my needs it would be the way to open each database separately and successively? -- dev-tech-crypto mailing list dev-tech-crypto@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-tech-crypto
