Here's a tested recipe that's safe for boiling water bath (BWB) canning. It's good too:
Chile Salsa
(from USDA bulletin 539) yield: 6 to 8 pints
5 pounds tomatoes
2 pounds chile peppers
1 pound onions, chopped
1 cup vinegar (5%)
3 tsp salt
½ tsp black pepper
Roast and peel peppers if they have tough skins (not necessary for jalapeños or serranos), remove seeds and stems, chop. Scald and peel tomatoes; chop. Combine all ingredients in large saucepan. Bring to a boil and simmer 10 minutes. Ladle into pint jars, leave 1/2 inch headspace. Adjust lids and process in boiling water bath for 15 minutes.
Notes: I generally use jalapeños, seeds and all, and I find that ½ cup bottled lemon juice plus ½ cup white vinegar tastes better than using all vinegar (or all lemon juice.)